The pH = 2.41
Further explanationGiven
5.0% by mass solution of acetic acid
the density of white vinegar is 1.007 g/cm3
Required
pH
Solution
Molarity of solution :
[tex]\tt M=\dfrac{\%mass\times \rho\times 10}{MW~acetic~acid}\\\\M=\dfrac{5\times 1.007\times 10}{60}\\\\M=0.839[/tex]
Ka for acetic acid = 1.8 x 10⁻⁵
[H⁺] for weak acid :
[tex]\tt [H^+]=\sqrt{Ka.M}[/tex]
Input the value :
[tex]\tt [H^+]=\sqrt{1.8\times 10^{-5}\times 0.839}\\\\(H^+]=0.00388=3.88\times 10^{-3}\\\\pH=3-log~3.88=2.41[/tex]
White vinegar is a 5.0% by mass solution of acetic acid in water and if the density of white vinegar is 1.007 g/cm³ then the pH of solution is 4.8.
How we calculate pH?pH of any solution will be calculated as:
pH = - log[H⁺], where
[H⁺] = concentration of H⁺ ions
In this question we will calculate the concentration of H⁺ ions as:
[H⁺] = √Ka.M, where
Ka = acid dissociation constant for acetic acid = 1.8 x 10⁻⁵ (known)
M is molarity and this can be calculated as:
M = (% mass × density × 10) / Molar mass of acid
Given that,
% mass = 5.0% by mass solution of acetic acid
density = 1.007 g/cm³
Molar mass of acetic acid = 60
Now putting all these values on the above equation, we get
M = (5 × 1.007 × 10) / 60 = 0.839
Now, we calculate the concentration of H⁺ ions by putting values on that equation as:
[H⁺] = √(1.8 x 10⁻⁵)(0.839)
[H⁺] = 1.5 x 10⁻⁵
So, pH of the solution will be calculated as:
pH = -log(1.5 x 10⁻⁵)
pH = -(-4.8)
pH = 4.8
Hence, pH is 4.8.
To know more about pH, visit the below link:
https://brainly.com/question/10313314
Useful:
Harmful:
2. Give an example of how Bacteria can be useful and harmful to man.
Answer:
normal flora useful
Explanation:
protect the skin
If 2.35 L hydrogen gas react with nitrogen gas to form nitrogen trihydride, how many grams of nitrogen will be needed for the reaction to be completed?
0.98 g
0.49 g
21.93 g
1.47 g
Answer:
1.47 g
Explanation:
what happens when copper sulphate reacts with hydrogen
sulphide?
Answer:
When hydrogen sulphide gas is passed through a blue solution of copper sulphate, a black precipitate of copper sulphide is obtained and the sulphuric acid so formed remains in the solution. In this reaction, cupric ions (from copper sulphate) combine with sulphide ions (from hydrogen sulfide) to form cupric sulphide.
Answer:
When hydrogen sulphide gas is passed through a blue solution of copper sulphate, a black precipitate of copper sulphide is obtained and the sulphuric acid so formed remains in the solution. In this reaction, cupric ions (from copper sulphate) combine with sulphide ions (from hydrogen sulfide) to form cupric sulphide.
Explanation:
2. Which number is not a coefficient in the equation,
2C6H14+ 19O2,-- 12CO2,+ 14H2O?
Answer:
2, 19, 12 and 14 are the coefficients.
Water + Heat
What is proof of a Chemical Reaction?
help put them in order
Answer:
hello
Explanation:
hi
How many moles are in 99.5 grams of titanium? Round your answer to the nearest hundredth. Be sure to include units.
Answer:
1000
Explanation:
true or false
1. resistance provides friction to electron movement
2.high resistance will speed up electron movement
3.a circuit is an open path for electrons to move through
4. in a circuit, electrons move from the low voltage area to the higher
5. in a circuit, the light bulb is called the load
Answer:1
Explanation: friction is showing us how in the past
what is this element
Answer:
Oxygen
Explanation:
From the question given above, the following data were obtained:
Number of electrons = 8
Number of protons = 8
Number of Neutrons = 8
Name of element =?
Next, we shall determine the atomic number of the element. This can be obtained as follow:
The atomic number of an element is simply defined as the number of protons in the atom of the element. Mathematically, it is expressed as:
Atomic number = proton number
From the question given above,
Number of protons = 8
Therefore,
Atomic number = 8
Comparing the atomic number of the element (i.e 8) with those in the periodic table, we can conclude that the element is oxygen since no two elements have the same atomic number.
Which of the following statements about tobacco use is not true?
a. Nicotine narrows blood vessels and puts added strain on the heart.
b. Smoking improves athletic performance.
c. Smoking can wreck lungs.
d. Nicotine in smokeless tobacco is addictive.
Explanation:
b and c statements are not true
if it helps you then plzz mark me brainliest
Answer:
B.) Smoking improves Athletic performance
Explanation:
yo please help. There is an image PLEASE... HELP... MEEEEE
Answer:
9. B different sounds the dog is exposed to
10. control, dependent, control, control, independent
Explanation:
There are three states of matter: solid, liquid, and gas. is this true or false
Answer:
true
Explanation:
Solid, liquid and gases are the only three States of matter
Question (2) If your car
gets 27.8 miles to the gallon, how many liters of gasoline are necessary to travel 112 km?
This problem can be solved in short steps or in one longer step. In either case, please show your work.
Use the following conversion factors:
1 mi = 1.609 km
1 gal = 3.785 L
Answer:
9.48 L.
Explanation:
Hello!
In this case, as the problem mentions a long way to solve it, we are going to apply it because it can provide the answer more rapidly; thus, considering that 112 km are required, 1 mile equals 1.609 km and 1 gallon equals 3.785 liters, we can set up the proportional factor as shown below:
[tex]112km*\frac{1mi}{1.609 km}*\frac{1gal}{27.8mi}*\frac{3.785L}{1gal}[/tex]
Whereas km, mi and gal are cancelled out as it turns out in L; therefore the required liters are:
[tex]9.48L[/tex]
Best regards!
How many molecules are there in a 42.3 g sample of water, H2O?
Answer:
In order to figure out how many molecules of water are present in that
48.90-g
sample, you first need to determine how many moles of water you have there.
As you know, a mole is simply a very large collection of molecules. In order to have one mole of something, you need to have exactly
6.022
⋅
10
23
molecules of that something - this is known as Avogadro's number.
In order to get to moles, you must use water's molar mass. A substance's molar mass tells you the mass of one mole of molecules of said substance.
Water has a molar mass of
18.015 g/mol
. This means that one mole of water molecules has a mass of
18.015 g
.
So, to sum this up,
6.022
⋅
10
23
molecules of water will amount to
1 mole
of water, which in turn will have a mass of
18.015 g
.
Explanation:
I NEED THIS TODAY, PLEASE HELP.
Write the following elements in decreasing ionic size. Li+, C4+, F-, O2-
70 POINTS
Answer:
Li+, C4+, O2-, and then F- They're written in decreasing ionic size.
Explanation:
Ionic size means the same thing as ionic radius. Furthermore, Ionic radius is the distance away from the central atom. Ionic radius increases going from top to bottom and decreases across the periodic table.
Lithium is in the 1st family/group with a charge of +1. So it has the biggest ionic radius.
Carbon is in the 4th family/group with a charge of +4. So it has a smaller ionic radius than Lithium.
Oxygen is in the 6th family/group with a charge of -2. So it has a smaller ionic radius than Carbon.
Lastly, Fluorine is in the 7th family/group with a charge of -1. So it has a smaller ionic radius than Oxygen.
Definition in your own words
Will check if you got it from online.
Word: States (Phases) of Matter
Answer:
Liquid,gas,solid and plasma
Explanation:
There four phases of matter. These phases are the gas phase(steam), the liquid phase(water), the solid phase(Ice) and finally the plasma phase(moucous).
Not all elements readily fit in the metal or non metal groupings. These elements are called metalloids. Examine the table below and classify W, X and Y as metals, metalloids or non-metals.
W= Lustre: Moderately high
Electrical conductivity: Low
Density: Medium
Melting point: Very high
X= Lustre: Low
Electrical conductivity: Nil
Density: Low
Melting point: Low
Y= Lustre: High
Electrical conductivity: High
Density: High
Melting point: High
What is the term used to describe a phase change from liquid to solid?
When a liquid changes into a solid, it is called solidification. When a gas changes into a solid, it is called deposition . When a liquid changes into gas, it is called evaporation. Phase changes are usually caused by changes in temperature or pressure.
question: convert 22.63 miles of oxygen to volume
very urgent
Answer:
506.912 L
Explanation:
From the question given above, the following data were obtained:
Number of mole of O₂ = 22.63 moles
Volume of O₂ =?
Recall:
1 mole of a gas occupy 22.4 L at STP.
With the above information, we obtained the volume occupied by 22.63 moles of O₂ as follow:
1 mole of O₂ occupied 22.4 L at STP.
Therefore, 22.63 moles of O₂ will occupy = 22.63 × 22.4 = 506.912 L at STP.
Thus, 22.63 moles of O₂ is equivalent to 506.912 L.
The mass of one gallon of water is approximately 3.78 kg or 3780 grams. How many moles are contained in one gallon of water?
a. 102
b. 210
c. 120
d. 201
Answer:
Number of moles of water = 210 mol
Explanation:
Given data:
Mass of water = 3780 g
Number of moles of water = ?
Solution:
Formula:
Number of moles = mass/molar mass
Molar mass of water = 18 g/mol
Number of moles = 3780 g/ 18 g/mol
Number of moles of water = 210 mol
pLeeease help im so tired and i need to SLEEP. Answer the 1s you know
1. How does the mechanical energy of a ball that is starting to fall compare to its total energy just before it hits the floor?
2. When you stand in sunlight, what form of energy is emitted by the sun?
3. An eye doctor wants to design reading glasses that also function as sunglasses. Should the eye doctor use a reflective-transparent material or a reflective-opaque material for the lenses? Support your claim.
An 8.24 gram sample of a hydrated salt is heated until it has a constant mass of 6.20 grams. What was the percent by mass of water contained in the original sample
Answer:
32.9%
Explanation:
The mass of water present in the original sample can be calculated by the substraction:
m H₂O = sample mass before heating - sample mass after heatingm H₂O = 8.24 g - 6.20 g = 2.04 gThe percent by mass of water can be calculated with the formula:
Water Mass / Original Sample Mass * 100 %[tex]\frac{2.04}{6.20}[/tex] * 100% = 32.9%What is exfoliation?
Answer:
Exfoliation involves the removal of the oldest dead skin cells on the skin's outermost surface. Exfoliation is involved in all facials, during microdermabrasion or chemical peels. Exfoliation can be achieved by mechanical or chemical means.
Explanation:
I did copy off internet!
:P
can someone help I don't understand how to find the amount for the name.
Answer:
A) 6.023*10^23
B)6.023*10^22
Explanation:
AVAGADRO it would take nearly 1 mole of chalk so
1 mole of any substance contain 6.023*10^23 particles.
AVAGADRO it would take nearly 1 mole of ink to print so
1 mole of any substance contain 6.023*10^23 particles.
30 POINTS HELPP PLEASE
1: selective breeding
2:traits
3: crop species
4: domestic
5: diverse
6: artificial
7: uniform
in your opinion if the answer is correct please like n mark MI s brain list
The the balanced equations to: solutions of lithium sulfate and potassium phosphate are mixed together to make lithium phosphate and potassium sulfate
Answer:
[tex]3Li_2SO_4+2K_3PO_4\rightarrow 2Li_3PO_4+3K_2SO_4[/tex]
Explanation:
Hello!
In this case, when lithium sulfate and potassium phosphate solutions are mixed to yield lithium phosphate and potassium sulfate, the following chemical equation comes up:
[tex]Li_2SO_4+K_3PO_4\rightarrow Li_3PO_4+K_2SO_4[/tex]
However, as atoms are not balanced we apply the inspection method to obtain:
[tex]3Li_2SO_4+2K_3PO_4\rightarrow 2Li_3PO_4+3K_2SO_4[/tex]
Best regards!
What's the charge on Ni in the compound NiCi3? *
+1
+2.
+3
- 7
-2.
3
you can't tell
Answer:
+3
Explanation:
Chlorine is anion with a -1 charge. But they are three chlorine atoms.
-1 * 3 = -3
So they have a -3 charge.
So to balance the compound, the nickel has to be a cation with a +3 charge.
-3 + 3 = 0
Furthermore, a chemical bond always has a 0 charge. Remember that.
Hope it helped! Rate my answer a 5 star if correct.
Loren is examining a hair found at a crime scene. He notes radical changes in the coloring of the hair. What is the term for this type of coloring?
Answer:
Granules of the hair cortex.
Explanation:
hope it helpfully...Answer:
It is banding for plato / edmentum
Explanation:
I took notes in the class and in my notes it says -
Human hairs have consistent coloring, whereas animal hair coloring may change radically. This radical change is called banding.
I promise it's easy points
Describe the life cycle of a star what determines the path a star could take.
Which of the following statements about sidestream smoke is not true?
a. It is the smoke that a smoker inhales from a cigarette.
b. It is dirtier and has a different chemical makeup than mainstream smoke.
c. It is the smoke that people around the smoker inhale.
d. It is the smoke that results from the burning end of a cigarette.
Answer: a
Explanation: the smoker actually exhales the sidestream smoke