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Chemistry
Which of the following is least soluble?
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Q. Which of the following is least soluble?
NTA Abhyas
NTA Abhyas 2020
Equilibrium
A
$NiS\left(\right.K_{s p}=3\times 10^{- 21}\left.\right)$
17%
B
$FeS\left(\right.K_{s p}=4\times 10^{- 19}\left.\right)$
27%
C
$MnS\left(\right.K_{s p}=7\times 10^{- 16}\left.\right)$
27%
D
$PtS\left(\right.K_{s p}=8\times 10^{- 73}\left.\right)$
30%
Solution:
Solubility depends on the solubility product greater the solubility and greater the solubility product.
So $PtS\left(\right.K_{s p}=8\times 10^{- 73}\left.\right)$ is least soluble here and solubility order is
MnS > FeS > NiS > PtS