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 652a: 17b

Answer

Reactants: Acid: $N{H_4}^+$ Base: $S^{2-}$ Products: Conjugate base: $NH_3$ Conjugate acid: $HS^-$

Work Step by Step

Reactants: Left side of the reaction. Products: Right side. 1. Identify the acid and the base of the reactants: - $N{H_4}^+$ is turning into $NH_3$; therefore, it is donating one proton, so it is the acid. - $S^{2-}$ is turning into $HS^-$; therefore, it is receiving one proton, so it is the base. 2. Identify the conjugate acid and base: - The conjugate base is the result of an acid losing a $H^+$. Since $N{H_4}^+$ is the acid, $NH_3$ is the conjugate base. - The conjugate acid is the result of a base gaining a $H^+$. Since $S^{2-}$ is the base, $HS^-$ is the conjugate acid.
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