Solid dissolves according to the equilibrium Al(OH) _3(s) Al ^ 3+ (aq)+3 OH ^-(aq)

CHEMISTRY · Single correct · AP · Chemistry · Equilibrium · Equilibrium

Problem

Solid Al(OH)3\text{Al(OH)}_3 dissolves according to the equilibrium Al(OH)3(s)⇌Al3+(aq)+3OH−(aq).\text{Al(OH)}_3(s) \rightleftharpoons \text{Al}^{3+}(aq)+3\text{OH}^-(aq). Which of the following expressions represents the solubility product constant KspK_{sp} for this reaction? (a) Ksp=[Al3+][OH−]2K_{sp}=[\text{Al}^{3+}][\text{OH}^-]^2 (b) Ksp=[Al3+][OH−]3[Al(OH)3]K_{sp}=\dfrac{[\text{Al}^{3+}][\text{OH}^-]^3}{[\text{Al(OH)}_3]} (c) Ksp=[Al3+][OH−]3K_{sp}=[\text{Al}^{3+}][\text{OH}^-]^3 (d) Ksp=[Al3+]+3[OH−]K_{sp}=[\text{Al}^{3+}]+3[\text{OH}^-]

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