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General Chemistry - Standalone boo...

11th Edition
Steven D. Gammon + 7 others
Publisher: Cengage Learning
ISBN: 9781305580343
BuyFind

General Chemistry - Standalone boo...

11th Edition
Steven D. Gammon + 7 others
Publisher: Cengage Learning
ISBN: 9781305580343

Solutions

Chapter
Section
Chapter 15, Problem 15.54QP
Textbook Problem

What are the concentrations of H3O+ and OH in each of the following?

  1. a 1.55 M NaOH
  2. b 0.15 M Sr(OH)2
  3. c 0.056 M HClO4
  4. d 0.47 M HCl

Expert Solution
Interpretation Introduction

Interpretation:

The concentration of H3O+andOH- in each of the given has to be determined.

Concept introduction:

The concentration of hydroxide ion or hydronium ion concentration is calculated by using the following formula.

[OH-] = Kw[H3O+] 

Where,

Kw for an acid is 1.0×10-15M

Kw for an base is 1.0×10-14M

Explanation of Solution

(a)

The given concentration that represents the OH- ion in sodium hydroxide

Therefore, The concentration of OH- is 1.55 M

Now, let’s calculate the concentration of H3O+ ion as follows.

 [H3O+]Kw[OH-] = 1.0×10-141.55= 6.452×10-15 = 6.45×10-15M

(b)

The given concentration that represents the OH- ion in potassium hydroxide

Therefore, The concentration of OH- is (0.15 M) = 0.30M

Now, let’s calculate the concentration of H3O+ ion as follows.

 [H3O+]Kw[OH-] = 1.0×10-140.30= 3.33×10-14 = 3.3×10-14M

(c)

The given concentration that represents the H3O+ ion in hydrogen bromide

Therefore, The concentration of H3O+ is 0

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Chapter 15 Solutions

General Chemistry - Standalone book (MindTap Course List)
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