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(B) The equilibrium constant for a chemical reaction in which a solid ionic compound dissolves to yield its ions in solution is called the solubility

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Solubility product

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(B) The equilibrium constant for a chemical reaction in which a solid ionic compound dissolves to yield its ions in solution is called the solubility product $(K_{sp})$.For example,consider the equilibrium: $CuSO_{4(s)} \rightleftharpoons Cu^{2+}_{(aq)} + S{O_{4}}^{2-}_{(aq)}$The solubility product for the above equilibrium is given by $K_{sp} = [Cu^{2+}][SO_{4}^{2-}]$,where $[Cu^{2+}]$ and $[SO_{4}^{2-}]$ are the molar concentrations of the ions in the saturated solution.

In a saturated solution of an electrolyte,the product of the concentrations of its ions is constant at a constant temperature. This constant for the electrolyte is known as:

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