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
ExtremeBDS [4]
2 years ago
11

Determine the percent ionization of a 0.225 M solution of benzoic acid. Express your answer using two significant figures.

Chemistry
1 answer:
Assoli18 [71]2 years ago
8 0

Answer:

1.68% is ionized

Explanation:

The Ka of benzoic acid, C₇H₆O₂, is 6.46x10⁻⁵, the equilibrium in water of this acid is:

C₇H₆O₂(aq) + H₂O(l) ⇄ C₇H₅O₂⁻(aq) + H₃O⁺(aq)

Ka = 6.46x10⁻⁵ = [C₇H₅O₂⁻] [H₃O⁺] / [C₇H₆O₂]

<em>Where [] are concentrations in equilibrium</em>

In equilibrium, some 0.225M of the acid will react producing both C₇H₅O₂⁻ and H₃O⁺, the equilibrium concentrations are:

[C₇H₆O₂] = 0.225-X

[C₇H₅O₂⁻] = X

[H₃O⁺] = X

Replacing:

6.46x10⁻⁵ = [X] [X] / [0.225-X]

1.4535x10⁻⁵ - 6.46x10⁻⁵X = X²

1.4535x10⁻⁵ - 6.46x10⁻⁵X - X² = 0

Solving for X:

X = -0.0038. False solution, there is no negative concentrations.

X = 0.00378M. Right solution.

That means percent ionization (100 times Amount of benzoic acid ionized  over the initial concentration of the acid) is:

0.00378M / 0.225M * 100 =

<h3>1.68% is ionized</h3>
You might be interested in
How can you predict an elements group and period
mina [271]
Who cares about this question
6 0
2 years ago
How many elements does hydrochloric acid have
Mars2501 [29]

Answer:

Hydrogen chloride (HCl), a compound of the elements hydrogen and chlorine, a gas at room temperature and pressure. A solution of the gas in water is called hydrochloric acid.

Explanation:

hoped that helped

5 0
2 years ago
Excellent
Lemur [1.5K]

Answer:

I think its c or d

Explanation:

5 0
3 years ago
Read 2 more answers
Need help please help
zimovet [89]

Explanation:

a)phenotype= 100% big

b) genotype=1:2:1 (FF-25%, Ff-50%, ff-25%)

phenotype=3:1 (big=75%, small= 25%)

7 0
3 years ago
In the event that you are exposed to infectious materials by being accidentally stuck with a used needle, you should report it t
bagirrra123 [75]
Use a tourniquet to reduce the rate of it spreading
6 0
3 years ago
Read 2 more answers
Other questions:
  • What are fragments of dust, soil, salt, smoke and ash upon which water vapor condenses to make clouds
    15·2 answers
  • For the following reaction, 25.2 grams of sulfur dioxide are allowed to react with 5.36 grams of oxygen gas. sulfur dioxide (g)
    9·2 answers
  • Ammonia gas combines with hydrogen chloride gas, forming solid ammonium chloride.
    15·1 answer
  • Empirical formula for C2H6O4
    5·1 answer
  • How are atoms and elements related?
    10·1 answer
  • What observations can you make about the valence electrons in the following columns of the periodic table?
    12·1 answer
  • 100 PONTS AND BRAINLIEST <br><br> What is the maximum number of formula units of NaCl in one mole?"
    11·2 answers
  • Many human activities are increasing the level of the greenhouse gases in the atmosphere.
    12·1 answer
  • Help plz I need it as soon as possible
    15·1 answer
  • A sample of ideal gas at room temperature occupies a volume of 27.0 L at a pressure of 852 torr . If the pressure changes to 426
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!