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The K, of a monoprotic weak acid is 0.00344. What is the percent ionization of a 0.149 M solution of this acid?

The K, of a monoprotic weak acid is 0.00344. What is the percent ionization of a 0.149 M solution of this acid?

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
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The K, of a monoprotic weak acid is 0.00344. What is the percent ionization of a 0.149 M solution of this acid?
Transcribed Image Text:The K, of a monoprotic weak acid is 0.00344. What is the percent ionization of a 0.149 M solution of this acid?
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Given Information:

Chemistry homework question answer, step 1, image 1

Calculations:

Let the weak acid is HA. The ICE table for the dissociation of weak acid HA is shown below.

Chemistry homework question answer, step 2, image 1

The expression for the dissociation constant is shown below.

Chemistry homework question answer, step 2, image 2

Since the x is the concentration, so it cannot be negative. Therefore, the accepted value of x is 0.02085 M.

The percent ionization is calculated as shown below.

Chemistry homework question answer, step 2, image 3

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