Chemistry and Chemical Reactivity (9th Edition)

Published by Cengage Learning
ISBN 10: 1133949649
ISBN 13: 978-1-13394-964-0

Chapter 17 Principles of Chemical Reactivity: Other Aspects of Aqueous Equilibria - Study Questions - Page 677c: 64


(a) $Ag_2CO_3$ (b) $PbCO_3$ (c) $AgCN$

Work Step by Step

(a) and (b) $CO_3^{2-}$ act as a weak base in water, following the reaction: $CO_3^{2-}(aq) + H_2O(l) \lt -- \gt HCO_3^-(aq) + OH^-(aq)$ Since the carbonate ion is being consumed, its concentration will decrease, increasing the solubility of the salts. (c) The same will occur with the $CN^-$ ion, which is also a base. $CN^-(aq) + H_2O(l) \lt -- \gt HCN(aq) + OH^-(aq)$
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