1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
AURORKA [14]
3 years ago
9

Ammonia, NH3, is a weak base with a Kb value of 3.95×10−5. What is the percent ionization of 0.085 M ammonia?

Chemistry
1 answer:
masha68 [24]3 years ago
4 0

Answer:

% = 2.11%

Explanation:

In order to do this, you need to do the acid base equilibrium reaction. In this case, the ionization of NH3 in water. The reaction taking place is the following:

NH3 + H2O <--------> NH4+ + OH-

Now, the percent ionization is a relation between the initial moles and the final moles. You could also take the concentrations. In this problem, we have the concentrations, therefore, we'll work with that.

The expression to calculate the percent ionization of ammonia would be:

% = [NH4+]/[NH3] * 100 (1)

In other words, we need the initial and final concentration of ammonia. We have the innitial, to get the final concentration, we do an ICE chart of the reaction and then, solve for the concentration.

The ICE chart is the following:

         NH3 + H2O <--------> NH4+ + OH-      Kb = 3.95x10⁻⁵

i)        0.085                           0           0

c)          -x                               +x         +x

e)     0.085-x                          x            x

Writting the expression of equilibrium we have:

Kb = [NH4+][OH-] / [NH3]

Replacing the above values:

3.95x10⁻⁵ = x² / 0.085-x

Kb is a very small value, so the difference of 0.085-x can be depreciated so:

3.95x10⁻⁵ = x²/0.085

x² = 3.95x10⁻⁵ * 0.085

x = √3.35x10⁻⁶

x = 0.0018 M

This result means that this is the final concentration of NH4+ and OH-, therefore the percent ionization is:

% = 0.0018 / 0.085 * 100

% = 2.11%

You might be interested in
Which produces oxygen-18 when it undergoes beta decay? A. oxygen-17 B. oxygen-18 C. fluorine-17 D. fluorine-18
inna [77]

Answer:

Option D. fluorine-18

Explanation:

The attached photo gives the explanation.

In the attached photo, A zX represent the atom that will undergo beta decay to produce oxygen–18.

After the calculation, A zX was found to be fluorine–18.

3 0
3 years ago
When KOH dissolved in ethanol, what is the intermolecular attraction between OH- ions and C2H5OH molecules
mezya [45]
Lon-dipole will be your answer
5 0
2 years ago
What characteristics are used to clarify an area as a wetland?
Nadya [2.5K]
Soil covered, saturated, submerged, flooded w water, standing water
5 0
3 years ago
How do synthesis reactions and a decomposition reactions differ
Minchanka [31]
A synthesis would be A+B-->AB its combining, decomposition is AB-->A+B, its the breaking up of a substance.
8 0
3 years ago
Which best describes a mixture?
natali 33 [55]

Answer:

I think the answer would be b, sorry if I'm wrong(EDIT: ITS ACTUALLY AAAAA)

5 0
2 years ago
Other questions:
  • Match the mixture with its description.
    9·2 answers
  • Potassium sulfate has a solubility of 15 g/100 g water at 40°C. A solution is prepared by adding 47 g of potassium sulfate to 15
    7·1 answer
  • What does polar and nonpolar mean in science
    8·2 answers
  • Calculate the molar mass of a compound from the following information. You find that the freezing point of benzene is 5.5 degree
    5·1 answer
  • The distance between the red and blue balls at the corners of this cube is0.448 nm :Calculate the distance between the red and g
    14·1 answer
  • Is nickel cyanide a ionic or covalent bond
    10·1 answer
  • What mass of oxygen is required to produce 8.0g of magnesium oxide from 4.8g if magnesium
    14·2 answers
  • A solar cell converts light energy to?
    10·1 answer
  • Me ayudan xfa, doy corona :)
    7·1 answer
  • The field of corn shown below was grown with 250 L/ha herbicide and no insecticide. Based what do you observe work what’s the re
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!