Molar solubility of N i ( O H ) 2 in 0 . 5 ? M C a ( O H ) 2 is _________ ( K s p of N i ( O H ) 2 = 2 × 10 - 15 M )

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Solution

Q.
Molar solubility of $N i {(O H)}_{2}$ in $0.5 M$ $C a {(O H)}_{2}$ is _________

$(K_{s p} of N i {(O H)}_{2} = 2 \times 10^{- 15} M)$

1 $2 \times 10^{- 13} M$

2 $2 \times 10^{- 14} M$

3 $2 \times 10^{- 15} M$

4 $2 \times 10^{- 16} M$

Ans.
(3)

$Ni {(OH)}_{2} \to {Ni}^{2 +} + 2 {OH}^{-}$

$2 \times 10^{- 15} = x$

$x = 2 \times 10^{- 15}$

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