Question

What is the $K_{sp}$ expression for lead (II) chloride?

Answer 1

$K_{sp}$

• $K_{sp}$ is called the solubility product constant.
• It is defined as the equilibrium constant for a substance in solid-state dissolving in an aqueous solution.
• It shows at what level the solute dissolves in the solution.
• When a substance has higher solubility, it has a higher $K_{sp}$ value.

Equation for lead (II) chloride is

• ${\mathrm{PbCl}}_2\left(\mathrm{s}\right)\rightleftharpoons {\mathrm{Pb}}^{2+}\left(\mathrm{aq}\right)+2{\mathrm{Cl}}^{-}\left(\mathrm{aq}\right)$

Hence, the ${\mathrm{K}}_{\mathrm{sp}}$ expression of above reaction is found to be

• ${\mathrm{K}}_{\mathrm{sp}}=\left[{\mathrm{Pb}}^{2+}\right]{\left[{\mathrm{Cl}}^{-}\right]}^2$