A salt MX has K_{sp} = 4 × 10^{-10} . What value of K_{sp} must another salt MX₃ have if mol

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6-2.Equilibrium-II (Ionic Equilibrium)

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A salt $MX$ has $K_{sp}$ = $4 × 10^{-10}$ . What value of $K_{sp}$ must another salt $MX_3$ have if the molar solubility of the two salts is to be identical

A

$3.2 × 10^{-10}$

B

$1.024 × 10^{-19}$

C

$1.78 × 10^{-5}$

D

$4.32 × 10^{-18}$

Solution

Solubility of $MX$ = $(4 × 10^{-10})^{1/2}$

$MX_3$ : $K_{sp}$ = $27s^4$
= $27 (2 × 10^{-5})^4$
= $4.32 × 10^{-18}$

Standard 11

Chemistry

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