Chemistry: The Molecular Science (5th Edition)

Published by Cengage Learning
ISBN 10: 1285199049
ISBN 13: 978-1-28519-904-7

Chapter 14 - Acids and Bases - Questions for Review and Thought - Topical Questions - Page 652b: 33a

Answer

$[H_3O^+] = 0.1M$ $[OH^-] = 1 \times 10^{- 13}M$ This solution is acidic.

Work Step by Step

$[H_3O^+] = 10^{-pH}$ $[H_3O^+] = 10^{- 1}$ $[H_3O^+] = 0.1M$ $[H_3O^+] * [OH^-] = Kw = 10^{-14}$ $ 0.1 * [OH^-] = 10^{-14}$ $[OH^-] = \frac{10^{-14}}{0.1}$ $[OH^-] = 1 \times 10^{- 13}M$ $[H_3O^+] > [OH^-]$ : Acidic solution. Assuming $25 ^{\circ} C$: pH < 7: Acidic solution.
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