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
65. Write an equation for the combustion of octane.
siniylev [52]

Answer:

2C8H18+25O2→16CO2+18H2O.



4 0
2 years ago
What changes in trade did Europeans hope to bring about by finding sea routes to Asian markets?
Dovator [93]

Answer:

controlled by the Arabs, who brought frankincense and myrrh by camel caravan from South Arabia.

3 0
3 years ago
Which of the following would be useful to show the growth rate of plants at varying temperatures? A. circle graph B. bar graph C
Pepsi [2]

Answer: Im thinking the answer Is B) Bar graph?

Explanation:

7 0
3 years ago
Read 2 more answers
Which of the molecules represented below contains carbon with sp2 hybridization?
Darya [45]

Answer:

Explanation:

sp² hybridization is found in those compounds having double bond .

Out of the given compounds only C₂H₂Cl₂ has double bond so this compound contains carbon with sp² hybridization .

Rest have sp³ hybridization because they are saturated compounds .

3 0
3 years ago
HEELLPP PLEASE IM BEGGING ILL GIVE BRAINLIEST
Arisa [49]

Answer:

C

Explanation:

You mix different thing together to make a new thing.

6 0
2 years ago
Other questions:
  • Who studied cell reproduction
    15·2 answers
  • Which of the following best describes the result of using a catalyst in a chemical reaction?
    9·2 answers
  • Why is the right side
    9·1 answer
  • Can you find a salmander in the desert or rainforest?
    6·1 answer
  • Sodium permanganate and iron(III) chloride are both dissolved in a beaker of water. In a double displacement reaction, two new p
    13·1 answer
  • Teams of scientists work together to explore space. Which achievement did not involve chemists?
    9·1 answer
  • Which of the following compounds has only one atom of carbon?
    12·1 answer
  • A teenager is discovered in his bedroom by his mother when she comes in to wake him for school at 6 a.m. He is stiff and lividit
    14·1 answer
  • What two things must occur in order for a light ray to refract when it strikes
    9·1 answer
  • The energy stored in the chemical bonds of a carbohydrate molecule is
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!