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Chemistry: An Atoms First Approach

2nd Edition
Steven S. Zumdahl + 1 other
Publisher: Cengage Learning
ISBN: 9781305079243

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Section
BuyFindarrow_forward

Chemistry: An Atoms First Approach

2nd Edition
Steven S. Zumdahl + 1 other
Publisher: Cengage Learning
ISBN: 9781305079243
Chapter 14, Problem 24E
Textbook Problem
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Compare the percent ionization of the base in Exercise 22a with the percent ionization of the base in Exercise 22d. Explain any differences.

Interpretation Introduction

Interpretation:

The percent ionization of the base in Exercise 22a is to be compared with the percent ionization of the base in Exercise 22d.

Concept introduction:

The ratio of the quantity of a given acid or a base, that has dissociated, to the initial concentration of the stated acid or base, multiplied by 100 , is termed as the percent dissociation of the acid or base.

To determine: A comparison between the percent ionization of the base in Exercise 22a with the percent ionization of the base in Exercise 22d.

Explanation of Solution

To find the percent ionization of the first base

The percent ionization of a base is calculated by the formula,

α=KbC

Where,

  • α is the degree of dissociation.
  • Kb is the base ionization constant (equilibrium constant).
  • C is the concentration.

Substitute the value of Kb and C in the above expression.

α=1.1×1080.1=3.316×104

Therefore, the percent ionization is 3.316×10-2%_ .

To find the percent ionization of the second base

Refer Exercise 22d.

The calculated value of [OH] is 1.3×105M .

The given initial concentration is 0.100M .

The percent ionization is calculated by the formula,

Percentionization=[OH]InitialConcentration×100

Substitute the value of [H+] and the value of initial concentration in the above expression

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Chapter 14 Solutions

Chemistry: An Atoms First Approach
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Ch. 14 - What are the major species in solution after...Ch. 14 - A friend asks the following: Consider a buffered...Ch. 14 - Mixing together solutions of acetic acid and...Ch. 14 - Could a buffered solution be made by mixing...Ch. 14 - Sketch two pH curves, one for the titration of a...Ch. 14 - Sketch a pH curve for the titration of a weak acid...Ch. 14 - You have a solution of the weak acid HA and add...Ch. 14 - You have a solution of the weak acid HA and add...Ch. 14 - The common ion effect for weak acids is to...Ch. 14 - Consider a buffer solution where [weak acid] ...Ch. 14 - A best buffer has about equal quantities of weak...Ch. 14 - Consider the following pH curves for 100.0 mL of...Ch. 14 - An acid is titrated with NaOH. 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