calculate the ph of a solution whose(oh^-) is 4.583*10^-5 mole dm cube (pkw=14)​

Answers

Answer 1

pH of solution = 9.661

Further explanation

pH is the degree of acidity of a solution that depends on the concentration of H⁺ ions. The greater the value the more acidic the solution and the smaller the pH.

pH = - log [H⁺]

So that the two quantities between pH and [H⁺] are inversely proportional because they are associated with negative values.

pOH=-log[OH⁻]

[tex]\tt pOH=-log[4.583\times 10^{-5}]\\\\pOH=5-log~4.583=4.339[/tex]

pH+pOH=pKw

[tex]\tt pH=14-4.339\\\\pH=9.661[/tex]


Related Questions

Which of the following is a true difference between protons and neutrons?

a
the have different masses
b
they are in different locations in the atom
c
the proton identifies the atom and the neutrons does not
d
all of the choices are true

Answers

Answer:

D

Explanation:

BRAINLEST WILL BE GIVEN TO A RIGHT ANSWER!!!!

Potassium (K) has a charge of +1, and sulfur has a charge of –2. Which best describes the compound they make?

A) The chemical formula is K2S, and the name is potassium sulfide.

B) The chemical formula is KS2, and the name is potassium sulfide.

C) The chemical formula is K2S, and the name is sulfur potassium.

D) The chemical formula is KS2, and the name is sulfur potassium.

Answers

Answer:

A) The chemical formula is K2S, and the name is potassium sulfide. Explanation:

edge

What is a non-example of a nucleus? Please give me a non-living thing.

Answers

Answer:

They are prokaryotes and both have tough cell walls. ◦ The cytoplasm contains ribosomes, but no organelles. ◦ There is no nucleus for organisms in this category.

Explanation:

Answer:

rock- non living

( Prokaryotes don't have a nucleus)

Explanation:

The production of 2-methyl-2-phenyl propane. This would be a two-step synthesis.
Can someone explain what is this reaction ?

Answers

Sorry man, this isn’t really my cup of tea

HELP!!!
i will mark brainliest ​

Answers

Answer:

Blank #1: noble gas

Blank #2: bonding

Blank #3: octet rule

Blank #4: share

Blank #5: filled

Blank #6: halogen

Please give me brianliest!!

Plants make their own food and are not required to consume food for energy. Into which category does this characteristic cause plants to be assigned?​

Answers

Answer:

Autotrophic or Producers

Explanation:

They are often called producers because they make their own food.

What is the mass 5.00 x 1022 molecules of PbCI2

Answers

Answer:

ion know this one

Explanation:

The force of attraction between one polar molecule and another polar molecule is​

Answers

Answer:

Dipole-dipole forces

Explanation:

A polar compound is that compound which contains atoms that have a difference in charges i.e electrostatic attraction occurs between its constituent atoms. Polar molecules are attracted to other polar molecules with opposite charges and her held together with the aid of certain forces

The attractive force between the negative part of a polar molecule (-) and the positive part of another polar molecule (+) is called DIPOLE-DIPOLE FORCES. This dipole-dipole force gets stronger with an increasing polarity of the molecules involved.

Which is most likely the result of millions of metal atoms crowding together so that molecular orbitals become combined?

Answers

Answer:

(The Formation Of Bands In A Crystal)

The formation of bands in a crystal !! NdsmksjswGood luck on your assignment snsmskskmsjssiwndnsmsmsjwjw

Which is most likely the result of millions of metal atoms crowding together so that molecular orbitals become combined?

Answers

The formation of bands in a crystal

Explanation:

- hope that helped :)

What separation method collects vapor

Answers

Answer:

evaporation and distilation

Explanation:

Distillation. In distillation, components of a liquid mixture are separated on the basis of the differences in their boiling temperatures. In its simplest form, distillation involves boiling the mixture and collecting the vapor in a condensation vessel, where it turns back into a liquid.

Sounds with small amount of energy______distances than sounds with more energy

A.Shorter
B. Longer
C.same
D. Medium

Answers

shorter I believe, but I would consult with your notes.

Easy Chemistry/ Help

Answers

i’m not really sure what the qn is asking for but if i’m not wrong it should be ‘1’ for each blank!

At 303 K, the volume of a gas is 30.0 ml. At constant pressure, what is the new
volume of the gas if the temperature is decreased to 283K?

Answers

Answer:

V₂ = 28 mL

Explanation:

Given data:

Initial temperature = 303 K

Initial volume = 30.0 mL

Final temperature = 283 K

Final volume = ?

Solution:

The given problem will be solve through the Charles Law.

According to this law, The volume of given amount of a gas is directly proportional to its temperature at constant number of moles and pressure.

Mathematical expression:

V₁/T₁ = V₂/T₂

V₁ = Initial volume

T₁ = Initial temperature

V₂ = Final volume  

T₂ = Final temperature

Now we will put the values in formula.

V₁/T₁ = V₂/T₂

V₂ = V₁T₂/T₁  

V₂ = 30.0 mL × 283 K /303 K

V₂ = 8490 mL.K / 303 K

V₂ = 28 mL

What is the number of protons for the following?
190
+2
Os
76

Answers

Answer:

190+2=192

Explanation:

192 add it 192 added

Answer: they are right

Explanation:

What Happens When extra Solute is added to unsaturated ,saturated and supersaturated solution​

Answers

of water is 36.0 g. If any more NaCl is added past that point, it will not dissolve because the solution is saturated. If more solute is added and it does not dissolve, then the original solution was saturated. If the added solute dissolves, then the original solution was unsaturated.

Why are liquid and gas molecules different

Answers

gas is separated with no regular arrangement and liquid is close with no regular arrangement (i hope this helps)

Relate pH values of 9.1, 1.2, and 5.7 to hydronium and hydroxyl ion concentration.

Answers

Answer:

9.1 = basic  1.2= very acidic  5.7= acidic

Explanation:

A metal atom and a non-metal atom bond together. What type of bond do they form?

Question 8 options:

Ionic


Round


Covalent


Glue

Answers

Answer: Iconic

Explanation:Ionic bonds are formed through the exchange of valence electrons between atoms, typically a metal and a nonmetal.

How many moles are there in a 122 gram sample of nickel (Ni)?
7.16 x 103 moles
6.22 mol
2.08 mol
0.481 mol

Answers

the molecular weight of nickel is 58.69 g/mol. thus in a 122 gram sample of nickel there are 122/58.69=2.08 moles of nickel.

The atomic mass of nickel is 58.71 gm and the given mass of nickel is 122 gm. Therefore, 2.08 moles are present in a 122-gram sample of nickel.

Nickel:

The atomic number of nickel is 28.The symbol of nickel is Ni.Density of a nickel 8.908 g/cm3.It is a d block element.It belongs to group 10 and period 4.It is also called transition metal.It is a metal and is located between groups 2 and 3.

Mass of nickel given: 122 grams.

Atomic mass of nickel: 58.71 g mol

Number of moles = Mass / molar mass

                             = 122/ 58.71

                              = 2.078

                              = 2.08 moles.

The atomic mass of nickel is 58.71 gm and the given mass of nickel is 122 gm. Therefore, 2.08 moles are present in a 122-gram sample of nickel.

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This is due tomorrow so please help! : name a product where viscosity is important its creation or use explain why it is important

Answers

Like the other user stated, viscosity is an important property of fluid foods.it is defined and an internal friction of a liquid or it’s ability to resist flow

If the atomic number increases then the atomic radius should decrease right? So what’s wrong with my data

Answers

Answer:

Atomic radius increases by increasing the atomic number.

Explanation:

Atomic radius :

Atomic radius is the distance between nucleus of an atom to its outer most electronic shell.

Trend along group:

As we move down the group atomic radii increased with increase of atomic number. The addition of electron in next level cause the atomic radii to increased. The hold of nucleus on valance shell become weaker because of shielding of electrons thus size of atom increased.

As the size of atom increases the ionization energy from top to bottom also  decreases because it becomes easier to remove the electron because of less nuclear attraction and as more electrons are added the outer electrons becomes more shielded and away from nucleus.

The given data show that the atomic number in increased from 4 to 88 it means atomic radius also increased from 1.53Å to 2.83Å. It means the given data is the elements of periodic table present in group. It is the data of 2nd group of periodic table.

Question: How hot is the sun?

Answers

Answer:

5,778 K

Explanation:

Which of the following is true about waves?
A.
They are always visible.
B.
They always move matter.
C.
They carry energy.
D.
They can only travel though outer space.

Answers

Answer:

c. they carry energy is the answer

Answer:

C. they carry energy

Explanation:

Energy can be carried from one place to another by waves, including water, light, and sound waves. Waves are oscillating disturbances that travel through but do not move matter.

Infrared radiation escaping from hot coals is an example of invisible waves carrying energy. This energy can be felt as heat.

Can someone help me click the picture

Answers

Answer:

A product

B coefficient

C script

D rectant

10 divided by 2 im confused

Answers

if your serious about this question then it is 5

The awncer is 5!! Just use a Calculator and you would’ve gotten 5!!

what is the needed electrons for CLO3-​

Answers

Each oxygen atom in the ClO3- ion already has two electrons the electrons in the Cl-O covalent bond. Because each oxygen atom needs six nonbonding electrons to satisfy its octet, it takes 18 nonbonding electrons to satisfy the three oxygen atoms.

Two individual atoms of the same element are slightly different. One has one more proton than it has electrons. The other has one more electron than it has protons. These atoms are both

ions
isotopes
freons
xenons
phlogistons

Answers

Answer:

ions

Explanation:

Individual atoms of the same element but having slightly different number of protons and electrons are called ions.

Ion is a charged particle.

An atom is made up of three fundamental subatomic particles. Protons are the positively charged particles Electrons are the negatively charged particles Neutrons do not carry any charges.

When the number of protons > electrons the body is positively charged.

When the number of electrons > protons the body is negatively charged.

Charged particles are called ions.

A balloon filled with helium occupies 21.0ft³ at 55.0°F. Find the temperature of the helium if the volume of the balloon decreases to 11.0ft³. (Assume that the pressure is held constant.)​

Answers

Answer:

Assuming pressure is held constant,the question reduces to a ratio and proportion type of question where;

At constant pressure,

21.0ft³-55.0°F

11.0fy³=11.0ft³/21.0ft³×55°F

The temperature is 28.809°F≈29°F

29°F is the temperature of the helium if the volume of the balloon decreases to 11.0ft³.

What is temperature?

Temperature expresses hotness and coldness or a measure of the average kinetic energy of the atoms or molecules in the system.

Assuming pressure is held constant, the question reduces to a ratio and proportion type of question where;

At constant pressure,

21.0ft³- 55.0°F

11.0fy³ = 11.0ft³ ÷ 21.0ft³ × 55°F

The temperature is 28.809°F ≈ 29°F

Hence, 29°F is the temperature of the helium if the volume of the balloon decreases to 11.0ft³.

Learn more about temperature here:

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Which type of bond will chromium atoms likely to form with other chromium atoms
A:ionic
B:covalent
C:metallic

Answers

Answer: B

Explanation: Covalent bonds where electrons are not shared equally between two atoms are called polar covalent bond. As shown above, the electrons in a covalent bond between two different atoms (H and Cl in this case) are not equally shared by the atoms. This is due to the electronegativity difference between the two atoms.

There are two types of chemical compound one is covalent compound and other is ionic compound in chemistry. The covalent bond will be formed between two chromium atoms. the correct option is option B.

What is chemical Compound?

Chemical Compound is a combination of molecule, Molecule forms by combination of element and element forms by combination of atoms in fixed proportion.

Covalent bond formed by sharing of electron and ionic bond formed by complete transfer of electron.

Element with same electronegativity difference combine together by covalent bond whereas ionic bond is formed by elements whose electronegativity difference is high.

As two chromium is combining that is two two element with same electronegativity is combining therefore, formation of covalent bond is the only possibility.

Therefore covalent bond will be formed between two chromium atoms. the correct option is option B.

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