   # Calculate the pH of the following solutions: a. 1.2 M CaBr 2 b. 0.84 M C 6 H 5 NH 3 NO 3 ( K b for C 6 H 5 NH 2 = 3.8 × 10 −10 ) c. 0.57 M KC 7 H 5 O 2 ( K a for HC 7 H 5 O 2 = 6.4 × 10 −5 ) ### Chemistry: An Atoms First Approach

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

#### Solutions

Chapter
Section ### Chemistry: An Atoms First Approach

2nd Edition
Steven S. Zumdahl + 1 other
Publisher: Cengage Learning
ISBN: 9781305079243
Chapter 13, Problem 168CWP
Textbook Problem
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## Calculate the pH of the following solutions:a. 1.2 M CaBr2b. 0.84 M C6H5NH3NO3 (Kb for C6H5NH2 = 3.8 × 10−10)c. 0.57 M KC7H5O2 (Ka for HC7H5O2 = 6.4 × 10−5)

(a)

Interpretation Introduction

Interpretation: The pH of the given solutions is to be calculated.

Concept introduction: Strong acids dissociate completely and rapidly when dissolved in an aqueous solution and have a very large value of Ka and a lower value of pH while the weak acids dissociate partially and slowly in an aqueous solution and have a very low value of Ka.and a higher value of pH.

To determine: The pH of 1.2MCaBr2 solution.

### Explanation of Solution

Explanation

The pH of CaBr2 solution is 7_.

The strong salts like CaBr2 are formed by the reaction between a strong acid and a strong base

(b)

Interpretation Introduction

Interpretation: The pH of the given solutions is to be calculated.

Concept introduction: Strong acids dissociate completely and rapidly when dissolved in an aqueous solution and have a very large value of Ka and a lower value of pH while the weak acids dissociate partially and slowly in an aqueous solution and have a very low value of Ka.and a higher value of pH.

To determine: The pH of 0.84MC6H5NH3NO3 solution.

(c)

Interpretation Introduction

Interpretation: The pH of the given solutions is to be calculated.

Concept introduction: Strong acids dissociate completely and rapidly when dissolved in an aqueous solution and have a very large value of Ka and a lower value of pH while the weak acids dissociate partially and slowly in an aqueous solution and have a very low value of Ka.and a higher value of pH.

To determine: The pH of 0.57MKC7H5O2 solution.

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