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$0.004\,M$ $Ca$$SO_4$ અને $ 0.002 \,H_2SO_4$ ના સમાન કદને મિશ્ર કરવાથી બનતા દ્રાવણનો $K_{sp}$ શોધો.
$5\times 10^{-6}$
$8 \times 10^{-12}$
$2\times 10^{-6}$
$7 \times10^{-9}$
Solution
$CaSO_4 $ $ \rightleftharpoons $ $Ca^{+2}$ +$ SO_4^{-2}$
$Ksp \rightleftharpoons [Ca^{+2}] [SO_4^{-2}]$
$CaSO_4 \rightleftharpoons Ca^{+2}+ {SO_4}^{-2}$
$C$ $0$ $0$
$0$ $C$ $2C$
$4\times10^{-3}$ $2\times4\times 10^{-3}$
$H_2SO_4 $ $ \rightleftharpoons $ $ 2H^+ $ $+$ $ SO_4^{-2}$
$C$ $0$ $0$
$0$ $2C$ $C$
$ 2\times 2\times 10^{-3 }$ $ 2 \times10^{-3}$
$Ksp = \left[ {\frac{{4 \times {{10}^{ – 3}}}}{2}} \right]\,\left[ {\frac{{2 \times {{10}^{ – 3}}}}{2}} \right] = 2 \times {10^{ – 6}}$
