Solubility product (K_{sp}) of salts of type MX , MX₂ , M₃X at temperature T are 4 × 10^{-

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6-2.Equilibrium-II (Ionic Equilibrium)

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Solubility product $(K_{sp})$ of salts of type $MX$, $MX_2$, $M_3X$ at temperature $T$ are $4 × 10^{-8}$, $3.2 × 10^{-14}$ and $2.7 × 10^{-15}$ respectively. Solubility of the salts at temperature $T$ are in the order

A

$MX > MX_2 > M_3X$

B

$M_3X > MX_2 > MX$

C

$MX_2 > M_3X > MX$

D

$MX > M_3X > MX_2$

Solution

$\mathrm{S}_{1}=2 \times 10^{-4}$

$\mathrm{S}_{2}=\left(\frac{32}{4} \times 10^{-15}\right)^{1 / 3}=2 \times 10^{-5}$

$\mathrm{S}_{3}=\left(\frac{27 \times 10^{-16}}{27}\right)^{19}=10^{-4}$

$\mathrm{S}_{2}<\mathrm{S}_{3}<\mathrm{S}_{1}$

Standard 11

Chemistry

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