Question

What is the correct representation for the solubility product of $Sn{S}_2$ ?

• A. $[S{n}^{2+}][S^{2-}{]}^2$
• B. $[S{n}^{4-}][S^{2-}{]}^2$
• C. $[S{n}^{2+}][2S^{2-}]$
• D. $[S{n}^{4+}][S^{2-}{]}^2$

Answer 1

Answer: (D)

The solubility equilibrium of $Sn{S}_2$ is
$Sn{S}_2\rightleftharpoons S{n}^{4+}+2S^{2-}$
Solubility product $K_{sp}=[S{n}^{4+}][S^{2-}{]}^2$