A) between \[{{10}^{-8}}\,M\]to \[{{10}^{-7}}\,M\]
B) between \[{{10}^{-7}}M\]to \[{{10}^{-8}}M\]
C) \[>{{10}^{-5}}M\]
D) \[<{{10}^{-8}}M\]
Correct Answer: C
Solution :
A salt is precipitated only when the product of ionic concentration is more than its solubility product. \[{{K}_{sp}}=1\times {{10}^{-8}}\] \[[{{A}^{+}}]={{10}^{-3}}M\] \[[{{B}^{-}}]=\frac{1\times {{10}^{-5}}}{{{10}^{-3}}}={{10}^{-5}}\,M\] So, AB will be precipitated only when the concentration of \[[{{B}^{-}}]\] is more than \[{{10}^{-5}}\,M.\]You need to login to perform this action.
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