   # For the following, mix equal volumes of one solution from Group I with one solution from Group II to achieve the indicated pH. Calculate the pH of each solution. Group I: 0.20 M NH 4 Cl, 0.20 M HCl, 0.20 M C 6 H 5 NH 3 Cl, 0.20 M (C 2 H 5 ) 3 NHCl Group II: 0.20 M KOI, 0.20 M NaCN, 0.20 M KOCl, 0.20 M NaNO 2 a. the solution with the lowest pH b. the solution with the highest pH c. the solution with the pH closest to 7.00 ### 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 191MP
Textbook Problem
5 views

## For the following, mix equal volumes of one solution from Group I with one solution from Group II to achieve the indicated pH. Calculate the pH of each solution.Group I: 0.20 M NH4Cl, 0.20 M HCl, 0.20 M C6H5NH3Cl, 0.20 M (C2H5)3NHClGroup II: 0.20 M KOI, 0.20 M NaCN, 0.20 M KOCl, 0.20 M NaNO2a. the solution with the lowest pHb. the solution with the highest pHc. the solution with the pH closest to 7.00

(a)

Interpretation Introduction

Interpretation: Various solutions of Group I and Group II are given. Equal volumes of one solution from Group I with one solution from Group II are mixed to achieve the indicated pH . The pH of each solution is to be calculated.

Concept introduction: Acidic solutions have pH value less than 7 while basic solutions have pH value greater than 7 . Neutral solutions have pH equals to 7 .

To determine: The pH of the solution with the lowest pH .

### Explanation of Solution

Explanation

The given solutions are:

Group I: 0.20MNH4Cl,0.20MHCl,0.20MC6H5NH3Cl,0.20M(C2H5)3NHCl .

Group II: 0.20MKOI,0.20MNaCN,0.20MKOCl,0.20MNaNO2 .

The mixture of 0.20MHCl and 0.20MKOCl will be of lowest pH because it is a mixture of strong acid and salt of weak base.

Only HCl furnishes the H+ ions in the mixture

(b)

Interpretation Introduction

Interpretation: Various solutions of Group I and Group II are given. Equal volumes of one solution from Group I with one solution from Group II are mixed to achieve the indicated pH . The pH of each solution is to be calculated.

Concept introduction: Acidic solutions have pH value less than 7 while basic solutions have pH value greater than 7 . Neutral solutions have pH equals to 7 .

To determine: The pH of the solution with the lowest pH .

(c)

Interpretation Introduction

Interpretation: Various solutions of Group I and Group II are given. Equal volumes of one solution from Group I with one solution from Group II are mixed to achieve the indicated pH . The pH of each solution is to be calculated.

Concept introduction: Acidic solutions have pH value less than 7 while basic solutions have pH value greater than 7 . Neutral solutions have pH equals to 7 .

To determine: The pH of the solution with the pH closest to 7.0 .

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