Introductory Chemistry (5th Edition)

Published by Pearson
ISBN 10: 032191029X
ISBN 13: 978-0-32191-029-5

Chapter 14 - Acids and Bases - Exercises - Problems - Page 520: 30

Answer

(a) Base. $Ca(OH)_2(aq) --\gt Ca^{2+}(aq) + 2OH^-(aq)$ (b) Acid. $HC_2H_3O_2(aq) + H_2O(l) \lt -- \gt C_2H_3O_2^-(aq) + H_3O^+(aq)$ (c) Base: $KOH(aq) -- \gt K^+(aq) + OH^-(aq)$ (d) Acid: $HNO_3(aq) + H_2O(l) -- \gt NO_3^-(aq) + H_3O^+(aq)$

Work Step by Step

(a) and (c): The "OH" in the molecule indicates that it can act as a base. (b) and (d): The isolated "H" as the first letter of the formula indicates that it can act as an acid. - According to the Arrhenius definition: Acid: Produces $H^+$ in aqueous solution; Base: Produces $OH^-$ in aqueous solution;
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