# Chapter 17 Principles of Chemical Reactivity: Other Aspects of Aqueous Equilibria - Study Questions - Page 677b: 41

See the answer below.

#### Work Step by Step

a) $AgCN(s)\leftrightarrow Ag^+(aq)+CN^-(aq)$ $K_{sp}=[Ag^+][CN^-]$ b) $NiCO_3(s)\leftrightarrow Ni^{2+}(aq)+CO_3^{2-}(aq)$ $K_{sp}=[Ni^{2+}][CO_3^{2-}]$ c) $AuBr_3(s)\leftrightarrow Au^{3+}(aq)+3\ Br^-(aq)$ $K_{sp}=[Au^{3+}][Br^-]^3$

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