If the molar solubility (in $mol \cdot L^{-1}$) of a sparingly soluble salt $AB_4$ is $S$ and the corresponding solubility product is $K_{sp}$,then $S$ in terms of $K_{sp}$ is given by the relation:

  • A
    $S = \left(\frac{K_{sp}}{128}\right)^{1/4}$
  • B
    $S = \left(\frac{K_{sp}}{256}\right)^{1/5}$
  • C
    $S = \left(256 K_{sp}\right)^{1/5}$
  • D
    $S = \left(128 K_{sp}\right)^{1/4}$

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