$20\,°C$ તાપમાને $Ag_2CrO_4$ નાં સંતૃપ્ત દ્રાવણમાં $Ag^+$ આયનની સાંદ્રુતા $1.5 \times 10^{-4}$ મોલ/લિટર છે. તો $20\,°C$ તાપમાને $Ag_2CrO_4$નો દ્રાવ્યતા ગુણાકાર $...........$

Question

A$3.3750 \times 10^{-12}$
B$1.6875 \times 10^{-10}$
C$1.6875 \times 10^{-12}$
D$1.6875 \times 10^{-11}$

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Solution

c
$Ag_2CrO_4$ $ \rightleftharpoons $ $\mathop {2A{g^ + }}\limits_{{{(2S)}^2}} + \mathop {CrO_4^ - }\limits_{S\,\,\,} $

$K_{sp} = 4S^3$ અને $2S = 1.5 \times 10^{-4}$ હોવાથી

$\therefore \,{K_{sp}} = {(2S)^2} \times S\,\, = {(1.5 \times {10^{ - 4}})^2} \times \left( {\frac{{1.5 \times {{10}^{ - 4}}}}{2}} \right)\,\,\, = 1.6875 \times {10^{ - 12}}$

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