Which reagent will distinguish between c6h5oh and c6h5ch2oh?

a. nahco3 (aq)

b. naoh (aq)

c. h2so4

d. a) and b)

e. b) and c)

Answers

Answer 1

The reagent that will distinguish between C₆H₅OH (phenol) and C₆H₅CH₂OH (benzyl alcohol) is:

b) NaOH (aq)

NaOH (sodium hydroxide) is a strong base, and it reacts differently with phenol and benzyl alcohol.

Phenol (C₆H₅OH) does not undergo a significant reaction with NaOH, as it is a weak acid and does not readily deprotonate in aqueous solutions. Therefore, when phenol is treated with NaOH, there will be no significant observable change.

On the other hand, benzyl alcohol (C₆H₅CH₂OH) is a primary alcohol. When benzyl alcohol reacts with NaOH, it undergoes deprotonation and forms the corresponding sodium alkoxide salt. The reaction can be represented as follows:

C₆H₅CH₂OH + NaOH ⟶ C₆H₅CH₂O⁻Na⁺ + H₂O

The formation of the sodium alkoxide (C₆H₅CH₂O⁻Na⁺) from benzyl alcohol is an observable change.

Therefore, option b) NaOH (aq) is the reagent that can distinguish between C₆H₅OH and C₆H₅CH₂OH.

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Related Questions

The atoms of elements in the same group or family have similar properties because.

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The atoms of elements in the same group or family have similar properties because they have the same number of valence electrons.

Valence electrons are the electrons in the outermost energy level of an atom. They are responsible for the chemical behavior of an element. Elements in the same group or family have the same number of valence electrons, which means they have similar chemical behavior.

For example, elements in Group 1, also known as the alkali metals, all have 1 valence electron. This gives them similar properties such as being highly reactive and having a tendency to lose that electron to form a positive ion.

In contrast, elements in Group 18, also known as the noble gases, all have 8 valence electrons (except for helium, which has 2). This makes them stable and unreactive because their valence shell is already filled.

So, the similar properties of elements in the same group or family can be attributed to their similar number of valence electrons.

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the combustion of hydrogen and oxygen to produce 2h2o(g) releases 483.6 kj of energy. the combustion of hydrogen and oxygen to produce 2h2o(l) releases 571.6 kj of energy. use this information to determine the enthalpy change for the conversion of one mole of h2o(g) to h2o(l).

Answers

Therefore, the enthalpy change for the conversion of one mole of H2O(g) to H2O(l) is 88 kJ.

To determine the enthalpy change for the conversion of one mole of H2O(g) to H2O(l), we need to calculate the difference in energy released between the combustion of H2O(g) and H2O(l).

The combustion of H2 and O2 to produce 2H2O(g) releases 483.6 kJ of energy.
The combustion of H2 and O2 to produce 2H2O(l) releases 571.6 kJ of energy.
By comparing the two reactions, we can see that the combustion of H2O(l) releases more energy than the combustion of H2O(g) by 88 kJ.

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Which hydrocarbon has all of its atoms in the same plane? a) c₂h₆ b) ch₄ c) c₂h₄ d) c₃h₄

Answers

Option c is correct.  c₂h₄ .The hydrocarbon that has all of its atoms in the same plane is c₂h₄ (option c). This is because c₂h₄ is an example of a planar molecule. To understand why, let's look at its structure. C₂H₄, or ethene, consists of two carbon atoms bonded together with a double bond and each carbon atom is bonded to two hydrogen atoms.

The carbon-carbon double bond creates a rigid planar structure in which all atoms lie in the same plane. In contrast, the other options do not have all of their atoms in the same plane:


- C₂H₆ (option a), or ethane, is a linear molecule with all atoms in a straight line.
- CH₄ (option b), or methane, is a tetrahedral molecule with the carbon atom at the center and the four hydrogen atoms positioned around it in a three-dimensional arrangement.
- C₃H₄ (option d), or propyne, contains a triple bond between two carbon atoms, leading to a non-planar structure.

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O fungos, no passado ,ja foram considerados plantas. entretanto, alguma caracteristicas permitem diferencia-los dos vegetais .sobre os reinos fungi ee plantae marque a alternativa correta

Answers

Characteristics that differentiate fungi from plants include: the lack of chlorophyll, the absence of sap-conducting tissues, the way nutrients are obtained through absorption, and the composition of the cell wall.

Fungi are eukaryotic organisms that belong to the Fungi kingdom, while plants are part of the Plantae kingdom. The main difference between them is related to their way of obtaining nutrients. Plants are autotrophic, that is, they are capable of producing their own food through photosynthesis, using the chlorophyll present in their cells to convert solar energy into nutrients. On the other hand, fungi are heterotrophic, which means that they depend on external sources for their nutrients, mainly through the decomposition of organic matter or through symbiosis with other organisms.

Furthermore, fungi have a cell wall composed mainly of chitin, while plants have a cell wall composed of cellulose. These fundamental differences between the Fungi and Plantae kingdoms make it possible to distinguish them from each other.

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a new 1000 liter batch reactor has been installed for the enzymatic conversion of penicillin g to 6-apa (a precursor for semi synthetic penicillin derivatives). use the following, one liter reactor data, to determine how much time it will take to convert 95% of the starting material (10 grams/liter) if the enzyme concentration is 50 mg/liter

Answers

Since the data provided only includes the enzyme concentration, we would need the reaction rate constant to calculate the time accurately. Without this information, we cannot determine the exact time needed for the conversion.

To determine the time, it will take to convert 95% of the starting material in the new 1000 liter batch reactor, we can use the data from the one-liter reactor. In the one-liter reactor, the enzyme concentration is 50 mg/liter and the starting material concentration is 10 grams/liter.
To calculate the time needed for 95% conversion, we can use the following formula:
Time = (ln(1/(1-X))) / (k * V)
Where X is the desired conversion (95%), k is the reaction rate constant, and V is the volume of the reactor.

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which is true regarding naoh and mg(oh)2? group of answer choices none of these are true naoh is more basic than mg(oh)2 because it's more soluble in water both naoh and mg(oh)2 are strong bases because both contain oh- mg(oh)2 is more basic than naoh because it dissociates to produce 2 oh- groups per unit dissolved, where naoh dissociates to produce only one oh- group per unit dissolved

Answers

The correct answer is that "mg(oh)2 is more basic than sodium hydroxide because it dissociates to produce 2 oh- groups per unit dissolved, where naoh dissociates to produce only one oh- group per unit dissolved."

This is because the basicity of a compound is determined by the number of hydroxide ions (OH-) it produces when dissolved in water. In this case, mg(oh)2 produces two OH- ions per unit dissolved, while naoh produces only one OH- ion per unit dissolved. Therefore, mg(oh)2 is more basic than naoh.

Sodium hydroxide (NaOH) is a highly caustic and versatile inorganic compound. It is commonly known as caustic soda or lye. Sodium hydroxide is an alkali and is considered a strong base due to its high pH and ability to readily donate hydroxide ions (OH-) when dissolved in water.

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In an underwriting of corporate securities, selling group members participate in the distribution of the securities quizlet

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In an underwriting of corporate securities, selling group members participate in the distribution of the securities based on the terms of the Selected Dealer Agreement without financial responsibility for unsold securities.

An underwriter refers to a person who participates in the original distribution of securities by selling such securities or guaranteeing their sale is a true statement regarding underwriters.

An underwriter is someone who works with different companies and organizations to determine how much risk the underwriting organization should take. It could be a person or a firm.

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The complete question should be

In an underwriting of corporate securities, selling group members participate in the distribution of the securities based on the terms of the _____ without financial responsibility for unsold securities.

1. construct step by step an ols estimator for beta 1 and explain/show whether or not it is unbiased.

Answers

This estimator aims to estimate the coefficient beta 1 in a linear regression model. To determine whether it is unbiased, we need to assess its properties, such as the expected value and the conditions under which it is unbiased.

1. Start with a linear regression model: Y = beta 0 + beta 1 * X + error, where Y represents the dependent variable, X represents the independent variable, beta 0 and beta 1 are the coefficients to be estimated, and error is the random error term.

2. Apply the OLS method to estimate beta 1. This involves minimizing the sum of squared residuals between the observed Y values and the predicted values from the regression model.

3. The OLS estimator for beta 1 is given by beta_hat 1 = Cov(X, Y) / Var(X), where Cov(X, Y) is the covariance between X and Y, and Var(X) is the variance of X.

4. To determine whether the OLS estimator is unbiased, we need to assess its expected value. If the expected value of the estimator is equal to the true parameter value, it is unbiased.

5. Under certain assumptions, such as the absence of omitted variables and no endogeneity, the OLS estimator for beta 1 is unbiased. However, if these assumptions are violated, the estimator may be biased.

6. To ensure the OLS estimator is unbiased, it is important to satisfy assumptions such as the error term having a mean of zero, the absence of perfect multicollinearity, and the absence of heteroscedasticity.

In summary, the OLS estimator for beta 1 can be constructed by minimizing the sum of squared residuals in a linear regression model. Its unbiasedness depends on satisfying certain assumptions and conditions, such as a zero-mean error term and the absence of omitted variables or endogeneity.

Checking these assumptions is crucial in assessing the unbiasedness of the OLS estimator.

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Wo mos transistors (m1 and m2) are connected inseries with same width and different channel lengths of l1 and l2. please use longchannel model to prove that the overall behavior of m1 and m2

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When two MOS transistors, M1 and M2, are connected in series with the same width but different channel lengths, the overall behavior can be analyzed using the long-channel model

The long-channel model assumes that the channel length of a MOS transistor is significantly larger than the technology scaling limits, thereby neglecting the short-channel effects. In this case, M1 and M2 have the same width but different channel lengths, denoted as L1 and L2, respectively.

In the long-channel model, the key factor determining the behavior of a MOS transistor is its channel length. A longer channel length results in higher resistance and reduced current flow. Therefore, the transistor with the longer channel length (M2) will exhibit higher resistance compared to the transistor with the shorter channel length (M1).

When two transistors are connected in series, the overall behavior is dominated by the transistor with the higher resistance. In this scenario, since M2 has the longer channel length, it will have a higher resistance compared to M1.

Consequently, the overall behavior of M1 and M2 connected in series will be influenced primarily by the characteristics of M2 due to its higher resistance.

Therefore, using the long-channel model, we can conclude that the behavior of M1 and M2 connected in series will be primarily determined by the transistor with the longer channel length, M2, due to its higher resistance.

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Rank the following molecules according to their predicted elution order on the GC (i.e., what do you expect to see if you analyzed a sample containing all three

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The predicted elution order on a gas chromatography (GC) analysis for three molecules can be ranked based on their boiling points, with the molecule having the lowest boiling point eluting first.

In gas chromatography, the elution order of molecules is typically determined by their boiling points. Molecules with lower boiling points tend to elute first, followed by those with higher boiling points. Therefore, to rank the molecules in terms of their predicted elution order, one needs to consider their boiling points.

The molecule with the lowest boiling point is expected to elute first, followed by the molecule with the next higher boiling point, and so on. By comparing the boiling points of the three molecules in question, one can determine their predicted elution order on a gas chromatography analysis.

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Rank the following molecules according to their predicted elution order on the GC (i.e., what do you expect to see if you analyzed a sample containing all three?).

Assume you have 0. 137 mol of dimethylglyoxime (used in the laboratory to test for nickel(ii) ions). What mass of the compound is present?

Answers

To determine the mass of dimethylglyoxime present when given 0.137 mol of the compound, we need to use the molar mass of dimethylglyoxime. compound present is 15.91 grams

By multiplying the molar mass by the number of moles, we can calculate the mass of the compound.

Dimethylglyoxime has a molecular formula of C4H8N2O2. To find its molar mass, we add up the atomic masses of carbon (C), hydrogen (H), nitrogen (N), and oxygen (O) in one molecule.

The atomic masses are approximately 12.01 g/mol for carbon, 1.01 g/mol for hydrogen, 14.01 g/mol for nitrogen, and 16.00 g/mol for oxygen.

Molar mass of dimethylglyoxime = (4 × 12.01 g/mol) + (8 × 1.01 g/mol) + (2 × 14.01 g/mol) + (2 × 16.00 g/mol) = 116.12 g/mol

To calculate the mass of 0.137 mol of dimethylglyoxime, we multiply the number of moles by the molar mass:

Mass = 0.137 mol × 116.12 g/mol = 15.91 g

Therefore, when given 0.137 mol of dimethylglyoxime, the mass of the compound present is approximately 15.91 grams.

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Did the reaction between the antacid tablet and the tap water produce hydrogen, oxygen, or carbon dioxide gas?

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The reaction between an antacid tablet and tap water typically produces carbon dioxide gas. Antacid tablets contain compounds such as calcium carbonate or magnesium hydroxide, which react with the acid in the stomach to neutralize it.

When these tablets are mixed with water, a chemical reaction occurs, releasing carbon dioxide gas as a byproduct. This gas is what causes the fizzing or bubbling effect that is commonly observed when an antacid tablet is dissolved in water. The production of hydrogen or oxygen gas is not typically associated with the reaction between antacid tablets and tap water.

In summary, the reaction between an antacid tablet and tap water primarily produces carbon dioxide gas.


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The solubility product for pbl, is 8.49 x 10" (298 k). calculate the solubility of pbly in g per 100g of water.

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The solubility of PbI2 in grams per 100 grams of water is approximately 2.005 x 10⁻³ grams by using solubility product, Ksp = [Pb2+][I-]²

The solubility product (Ksp) expression for the equilibrium of a sparingly soluble salt, such as PbI2, can be written as follows:

Ksp = [Pb2+][I-]²,

where [Pb2+] represents the concentration of Pb2+ ions and [I-] represents the concentration of I- ions in the saturated solution.

To calculate the solubility of PbI2, we need to assume that the solubility of the compound is "x" grams per 100 grams of water. This means that the concentration of Pb2+ and I- ions will also be "x" grams per 100 grams of water.

Using the Ksp expression, we can substitute these values and write the equation as:

8.49 x 10⁻⁹ = (x)(x)²,

which simplifies to:

8.49 x 10⁻⁹ = x³.

Taking the cube root of both sides, we find:

x = (8.49 x 10⁻⁹)¹/³.

Evaluating the right-hand side of the equation, we obtain approximately 2.005 x 10⁻³.

Therefore, the solubility of PbI2 in grams per 100 grams of water is approximately 2.005 x 10⁻³ grams.

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Hen ammonia reacts with water hydroxide ion is formed.

a. true

b. false

Answers

The statement "Hen ammonia reacts with water, hydroxide ion is formed" is false. Hen ammonia is not a recognized chemical compound or term, and it does not undergo a reaction with water to produce hydroxide ions.

Ammonia (NH3) is a colorless gas composed of one nitrogen atom bonded to three hydrogen atoms. When ammonia is dissolved in water, it forms ammonium ions (NH4+) and hydroxide ions (OH-) through a process called ionization. This is represented by the equation NH3 + H2O -> NH4+ + OH-. In this reaction, water acts as a base, accepting a proton from ammonia to form the ammonium ion and releasing a hydroxide ion. However, the term "hen ammonia" is not recognized in chemistry, and thus, the statement in question is false.

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j. bai and p. perron, "computation and analysis of multiple structural change models," journal of applied econometrics, vol. 18, no. 1, pp. 1–22, 2003.

Answers

The paper was published in the Journal of Applied Econometrics, Volume 18, Issue 1, pages 1-22 in the year 2003.

Learn more about the computation and analysis of multiple structural change models in the research paper titled "Computation and Analysis of Multiple Structural Change Models" by J. Bai and P. Perron.

The paper was published in the Journal of Applied Econometrics, Volume 18, Issue 1, pages 1-22 in the year 2003.

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write the expression for the reaction quotient in terms of concentration for the following reaction. 3h2 n2↽−−⇀2nh3 use [h2], [n2], and [nh3] to represent the concentrations of the components. write the expression as a rational expression using only positive exponents as needed. simplify the expression (omit exponents equal to 1 and factors with exponents of 0). do not use multiplication symbols between components. use a fraction bar, not a division symbol, for any division in the expression.

Answers

The expression for the reaction quotient (Q) in terms of concentration for the reaction 3H2 + N2 ⇌ 2NH3 is Q = [NH3]^2 / [H2]^3 * [N2].

The expression for the reaction quotient (Q) in terms of concentration for the reaction 3H2 + N2 ⇌ 2NH3 can be obtained by considering the stoichiometry of the reaction. The concentration of a species is represented by the square brackets [ ].

Therefore, we can express the reaction quotient as,

Q = ([NH3]^2) / ([H2]^3 * [N2]).

The numerator represents the square of the concentration of NH3, while the denominator consists of the product of the concentrations of H2 raised to the power of 3 and N2.

This expression allows us to quantify the relative concentrations of the reactants and products at any given moment during the reaction. By comparing the reaction quotient (Q) to the equilibrium constant (K), we can determine whether the reaction is at equilibrium or if it will shift towards the formation of more products or reactants.

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What pressure will 3.20 mol of n2 gas exert if confined in a 15.0 l container at 100°c?

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The pressure exerted by 3.20 mol of N2 gas confined in a 15.0 L container at 100°C is approximately 6.47 atm.

To calculate the pressure exerted by the gas, we can use the ideal gas law equation, which states that the pressure (P) of a gas is equal to the product of the number of moles (n), the gas constant (R), and the temperature (T), divided by the volume (V).

The gas constant R is equal to 0.0821 L·atm/(mol·K) when pressure is in atmospheres, volume is in liters, and temperature is in Kelvin.

Given that the number of moles (n) is 3.20 mol, the volume (V) is 15.0 L, and the temperature (T) is 100°C, we need to convert the temperature to Kelvin by adding 273.15 to it. Thus, 100°C + 273.15 = 373.15 K.

Substituting these values into the ideal gas law equation, we have:

P = (n * R * T) / V

P = (3.20 mol * 0.0821 L·atm/(mol·K) * 373.15 K) / 15.0 L

P = 6.47 atm

Therefore, the pressure exerted by 3.20 mol of N2 gas confined in a 15.0 L container at 100°C is approximately 6.47 atm.

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Write down 10 things that you learned from watching this documentary
How earth was made?

Answers

Around 4.6 billion years ago, the Earth originated from a massive cloud of gas and dust known as the solar nebula.

Here are ten key points about the formation of Earth:

Nebular Hypothesis: Earth's formation is explained by the Nebular Hypothesis, which proposes that the solar system formed from a rotating disk of gas and dust.

Accretion: Small particles in the nebula collided and stuck together through a process called accretion, gradually forming planetesimals and protoplanets.

Planetesimal Collisions: Over time, planetesimals merged through collisions, leading to the formation of larger planetary bodies like Earth.

Differentiation: The heat generated by collisions and the decay of radioactive elements caused Earth to differentiate into layers with a dense metallic core, a mantle, and a crust.

Core Formation: The metallic core formed through the accretion of heavy elements, particularly iron and nickel.

Bombardment Period: During the early stages of Earth's formation, it experienced intense bombardment by leftover planetesimals and asteroids.

Water Delivery: Water was likely delivered to Earth through comets and asteroids during the Late Heavy Bombardment phase.

Atmosphere Formation: Earth's atmosphere gradually developed through outgassing from volcanic activity and the release of trapped gases from the interior.

Early Oceans: As Earth cooled down, water vapor condensed, leading to the formation of the Earth's oceans.

Habitability: Earth's distance from the Sun, its atmosphere, and the presence of liquid water have made it conducive to supporting life.

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When aqueous solutions of NaOH and Fe(NO3)3 are combined, a red precipitate forms. What is the identity of the precipitate

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The red precipitate formed when aqueous solutions of NaOH and Fe(NO3)3 are combined is iron(III) hydroxide (Fe(OH)3).

When sodium hydroxide (NaOH) and iron(III) nitrate (Fe(NO3)3) are mixed together, a double displacement reaction occurs. The sodium ions (Na+) from NaOH and the nitrate ions (NO3-) from Fe(NO3)3 remain in solution, while the hydroxide ions (OH-) from NaOH react with the iron(III) ions (Fe3+) from Fe(NO3)3.

The reaction produces iron(III) hydroxide (Fe(OH)3), which is insoluble in water and forms a red precipitate. The red color of the precipitate is due to the presence of iron in the +3 oxidation state. Therefore, the identity of the precipitate formed in this reaction is iron(III) hydroxide.

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The percent by mass of sodium sulfate in a solution of 32.0 g of sodium sulfate dissolved in enough water to make 94.0 g of solution is: Question 13 options: 66.0% 134% 74.6% 25.4% 34.0%

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The percent by mass of sodium sulfate in a solution of 32.0 g of sodium sulfate dissolved in enough water to make 94.0 g of solution is 34.0%.

The percent by mass of sodium sulfate in the solution can be calculated by dividing the mass of sodium sulfate by the mass of the solution and multiplying by 100.

Mass of sodium sulfate = 32.0 g
Mass of solution = 94.0 g

Percent by mass = (Mass of sodium sulfate / Mass of solution) * 100
               = (32.0 g / 94.0 g) * 100
               = 34.0%
The percent by mass of sodium sulfate in the solution is 34.0%.

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The incomplete Lewis structure below shows all the atoms and sigma bonds for a particular molecule, but nothing else. The molecule has a net charge of . Fill in any missing electrons to create the best Lewis structure for the molecule. Make sure to include any non-zero formal charges.

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To create the best Lewis structure for a molecule with a net charge of , we need to determine the missing electrons and any non-zero formal charges.

Lewis structures, also known as Lewis dot structures or electron dot structures, are diagrams that represent the arrangement of electrons in a molecule or ion. They provide a simple and visual way to depict the valence electrons of atoms and show how they are shared or transferred in chemical bonding.

Lewis structures provide a helpful starting point for understanding the electron arrangement and bonding patterns in molecules. However, they are simplified representations that do not account for the three-dimensional shape of molecules or the presence of d-orbitals in heavier elements. More advanced theories and techniques.

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The following reaction occurs in an electrochemical cell. what type of electrochemical cell is it, and which metal reacts at the cathode? edginuity

Answers

An electrochemical cell is a type of cell in which there is transfer of e and a variety kinds of redox reactions occur within the cell.

There is a kind of cell which is used in the field of electrochemistry and these kinds of cells are known as electro-chemical cell. This kind of cell type is used in various types of reactions that are generally said to be the redox reaction.

In this type there is the transfer of only electrons(e), which are generally transferred from one type of species to the other specific type of species. In consideration with the electro-chemical cell(EC) it is generally considered to be sub-divided into its two types. Firstly is said to be the voltaic cell and secondly is said to be electrolytic cell.

In both the cell there are few things in common such as the electron transfer, redox-reaction and the reaction is considered to be non-feasible.

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The complete question is

What is an electrochemical cell. What type of reactions occur in an electrochemical cell?

a student ran the following reaction in the laboratory at 383 k: when she introduced 0.0461 moles of and 0.0697 moles of into a 1.00 liter container, she found the equilibrium concentration of to be 0.0191 m. calculate the equilibrium constant, , she obtained for this reaction.

Answers

To calculate the equilibrium constant (K) for this reaction, you can use the equation: K = [C]^c [D]^d / [A]^a [B]^b


To find the initial concentration of [A], divide the number of moles (0.0461 moles) by the volume of the container (1.00 liter). The initial concentration of [A] is 0.0461 M. Similarly, for [B], divide the number of moles (0.0697 moles) by the volume of the container (1.00 liter). The initial concentration of [B] is 0.0697 M. Now we have all the necessary information to calculate the equilibrium constant. Since we don't have the balanced chemical equation, I will assume a general equation:

aA + bB ⇌ cC + dD
Using the given information, we have:
[A] = 0.0461 M
[B] = 0.0697 M
[C] = 0.0191 M
Plugging in the values, the equilibrium constant (K) can be calculated as: K = (0.0191^c) / (0.0461^a * 0.0697^b)

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Which of the following functional groups could not act as a hydrogen bond donor? both aldehyde and ester. an aldehyde. an amino group. a hydroxyl group. an ester.

Answers

An ester is the functional group that could act as a hydrogen bond donor. Therefore, the correct option is option E.

A functional group is a particular configuration of atoms in a molecule that is in charge of that compound's distinctive chemical reactions and physical characteristics. It refers to a part of a molecule with a unique chemical behaviour. As they influence the reactivity and characteristics of organic molecules, functional groups are crucial to organic chemistry. They are frequently divided into a number of categories according to the kind of atoms that make up the group. Chemists can synthesise new compounds with particular qualities by determining and comprehending the functional group that is present in a substance. The functional group that could serve as a hydrogen bond donor is an ester.

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The heat of hydrogenation of an unsaturated compound can be used to estimate its stability. The heat of hydrogenation of benzene is _____ than expected by comparison with cyclohexene and 1,3-cyclohexadiene. This difference indicates that benzene is much _____ stable than a system containing three isolated double bonds.

Answers

Answer: The heat of hydrogenation of benzene is lower

Explanation: less, lower (since benzene is more stable than expected, it is already at a lower energy than an isolated triene. Less energy will therefore be released during hydrogenation).

Answer: This means that real benzene is about 150 kJ mol -1 more stable than the Kekulé structure gives it credit for. This increase in stability of benzene is known as the delocalization energy or resonance energy of benzene.

An electron jumps to a more distant orbit when an atom: Group of answer choices emits light absorbs light

Answers

An electron jumps to a more distant orbit when an atom absorbs light. An atom is composed of a nucleus and electrons. The electrons in the atom revolve around the nucleus in orbits. When the electrons gain energy, they jump from one orbit to another distant orbit. This is known as the excitation of an electron. When the electron is excited, it gains potential energy that is equal to the energy difference between the higher and lower levels.

The excitation energy can be supplied by light, heat, or chemical reactions. However, we will discuss the excitation of an electron due to light in this answer. When an atom absorbs light, its electrons absorb the energy of the light wave. The energy of the wave corresponds to the difference in the potential energy of the electron between the initial and final orbits. If the absorbed energy is equal to or greater than the excitation energy required for the electron to jump to a higher energy level, then the electron jumps to the more distant orbit.

The atom then becomes unstable, and the electron returns to the lower energy state by releasing the extra energy in the form of light photons. This process is known as emission. The frequency of the emitted light corresponds to the difference in energy between the two energy levels. The larger the energy difference, the higher the frequency and the shorter the wavelength of the emitted light. The opposite process of absorption is emission, where an electron jumps down from a higher energy level to a lower energy level and emits light in the process.

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If 1. 70g of aniline reacts with 2. 10g of bromine, what is the theoretical yield of 4-bromoaniline (in grams)?

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If 1. 70g of aniline reacts with 2. 10g of bromine, the theoretical yield of 4-bromoaniline (in grams) is approximately 10.76 grams.

The theoretical yield of 4-bromoaniline can be calculated based on the stoichiometry of the reaction between aniline and bromine. Aniline (C6H5NH2) reacts with bromine (Br2) to form 4-bromoaniline (C6H5NH2Br). The balanced equation for this reaction is:

C6H5NH2 + Br2 → C6H5NH2Br + HBr

From the balanced equation, we can determine the molar ratio between aniline and 4-bromoaniline. One mole of aniline reacts with one mole of 4-bromoaniline.

To calculate the moles of aniline and bromine in the given amounts, we use their respective molar masses. The molar mass of aniline (C6H5NH2) is approximately 93.13 g/mol, and the molar mass of bromine (Br2) is approximately 159.81 g/mol.

First, we calculate the moles of aniline:

moles of aniline = mass of aniline / molar mass of aniline

= 70 g / 93.13 g/mol

≈ 0.751 mol

Next, we determine the limiting reagent, which is the reactant that is completely consumed and determines the maximum amount of product that can be formed. The reactant that produces the lesser number of moles of product is the limiting reagent.

In this case, we compare the moles of aniline and bromine to determine the limiting reagent.

moles of bromine = mass of bromine / molar mass of bromine

= 10 g / 159.81 g/mol

≈ 0.0626 mol

The molar ratio between aniline and bromine is 1:1. Since the moles of bromine are lesser than the moles of aniline, bromine is the limiting reagent.

Now, we calculate the moles of 4-bromoaniline that can be formed, using the molar ratio from the balanced equation:

moles of 4-bromoaniline = moles of bromine (limiting reagent) = 0.0626 mol

Finally, we calculate the theoretical yield of 4-bromoaniline:

theoretical yield of 4-bromoaniline = moles of 4-bromoaniline × molar mass of 4-bromoaniline

≈ 0.0626 mol × (93.13 g/mol + 79.92 g/mol) (molar mass of 4-bromoaniline)

≈ 0.0626 mol × 173.05 g/mol

≈ 10.76 g

Therefore, the theoretical yield of 4-bromoaniline is approximately 10.76 grams.

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What is the molarity of a solution of 10y mass cadmium sulfate, CdSO4 (molar mass = 208. 46 g/mol) by mass? The density of the solution is 1. 10 g/ml

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The molarity of a solution of 10y mass cadmium sulfate, CdSO4 (molar mass = 208. 46 g/mol) by mass is approximately 5.28 M.

We need to know the solute concentration in moles and the volume of the solution in litres in order to determine the molarity of a solution.

In this case, the mass of cadmium sulphate (CdSO4) and the solution's density are also provided.

Firstly, we need to find the volume of the solution.

Since the density is given as 1.10 g/ml and the mass of the solution is not provided, we cannot directly calculate the volume.

Therefore, we'll assume a mass of 10 grams for the solution, as it is not specified.

Next, Using the specified mass, we can determine the number of moles of cadmium sulphate (CdSO4).

.

The molar mass of CdSO4 is 208.46 g/mol.

When the mass is divided by the molar mass, we get:

moles of CdSO4 = 10 g / 208.46 g/mol ≈ 0.048 moles

Finally, we divide the moles of CdSO4 by the volume of the solution in liters.

Since the mass of the solution is assumed to be 10 grams and the density is given as 1.10 g/ml, the volume is:

volume of solution = 10 g / 1.10 g/ml = 9.09 ml = 0.00909 L

Now, we can calculate the molarity:

Molarity = moles of CdSO4 / volume of solution

Molarity = 0.048 moles / 0.00909 L ≈ 5.28 M

Therefore, the molarity of the solution is approximately 5.28 M.

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A Frenkel defect in a crystal of silver bromide, AgBr, consists of: (a) Asilvervacancyandabromideinterstitial. (b) Asilvervacancyandabromidevacancy. (c) Asilverinterstitialandasilvervacancy.

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The correct answer is (a) A silver vacancy and a bromide interstitial.

A Frenkel defect is a type of point defect that occurs in ionic crystals when an ion moves from its lattice site to an interstitial site, creating a vacancy at the original site. In the case of silver bromide (AgBr), which is an ionic compound, a Frenkel defect can occur when a silver ion moves from its lattice site (creating a silver vacancy) and occupies an interstitial site within the crystal lattice (creating a bromide interstitial).

No calculation is required to determine the type of Frenkel defect in silver bromide. It is based on the understanding of Frenkel defects and the crystal structure of AgBr.

In a crystal of silver bromide, a Frenkel defect consists of a silver vacancy and a bromide interstitial. This defect is a result of the movement of silver ions within the crystal lattice, creating a vacancy at their original site and occupying an interstitial position.

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a student isolated 25 g of a compound following a procedure that would theoretically yield 81 g. what was his percent yield? use tool bar to write your calculation work.

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To find the percent yield, the chemistry we need to divide the actual yield by the theoretical yield and multiply by 100.Given: Actual yield = 25 g Theoretical yield = 81 g

Percent yield = (actual yield / theoretical yield) * 100 Substituting the given values: Percent yield = (25 g / 81 g) * 100 we need to divide the actual yield by the theoretical yield and multiply by 100
Now, we can calculate the percent yield using the toolbar.

Percent yield = (25 / 81) * 100 = 30.86%,Therefore, Now, we can calculate the percent yield using the toolbar. the student's percent yield is approximately 30.86%. and using simple chemical kinetics we found the answer.

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