   # For each of the following salts in water, predict whether the pH will be greater than, less than, or equal to 7. (a) KBr (b) NH 3 NO 3 (c) AlCl 3 (d) Na 2 HPO 4 ### Chemistry & Chemical Reactivity

9th Edition
John C. Kotz + 3 others
Publisher: Cengage Learning
ISBN: 9781133949640

#### Solutions

Chapter
Section ### Chemistry & Chemical Reactivity

9th Edition
John C. Kotz + 3 others
Publisher: Cengage Learning
ISBN: 9781133949640
Chapter 16.4, Problem 1CYU
Textbook Problem
3 views

## For each of the following salts in water, predict whether the pH will be greater than, less than, or equal to 7.(a) KBr(b) NH3NO3(c) AlCl3(d) Na2HPO4

(a)

Interpretation Introduction

Interpretation:

Whether the pH will be greater than, less than or equal to 7 for the following salts has to be identified.

Concept Introduction:

The pH is a unit of measure which describe the degree of alkanity or acidity of a solution.

pH = log[H+]

A solution may be acidic and basic depends on relative strength of anions as an acid or base. Anions and cations can be acidic, basic and netural. Acidic have pH < 7, basic have pH > 7 and netural have pH=7.

### Explanation of Solution

Refer to table 16.3 in textbook for the acidic and basic nature of ions.

In given salt KBr, K+ is cation and Br is anion with neutral nature .

K++H2OKOH+H+Br

(b)

Interpretation Introduction

Interpretation:

Whether the pH will be greater than, less than or equal to 7 for the following salts has to be identified.

Concept Introduction:

The pH is a unit of measure which describe the degree of alkanity or acidity of a solution.

pH = log[H+]

A solution may be acidic and basic depends on relative strength of anions as an acid or base. Anions and cations can be acidic, basic and netural. Acidic have pH < 7, basic have pH > 7 and netural have pH=7.

(c)

Interpretation Introduction

Interpretation:

Whether the pH will be greater than, less than or equal to 7 for the following salts has to be identified.

Concept Introduction:

The pH is a unit of measure which describe the degree of alkanity or acidity of a solution.

pH = log[H+]

A solution may be acidic and basic depends on relative strength of anions as an acid or base. Anions and cations can be acidic, basic and netural. Acidic have pH < 7, basic have pH > 7 and netural have pH=7.

(d)

Interpretation Introduction

Interpretation:

Whether the pH will be greater than, less than or equal to 7 for the following salts has to be identified.

Concept Introduction:

The pH is a unit of measure which describe the degree of alkanity or acidity of a solution.

pH = log[H+]

A solution may be acidic and basic depends on relative strength of anions as an acid or base. Anions and cations can be acidic, basic and netural. Acidic have pH < 7, basic have pH > 7 and netural have pH=7.

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