A) between\[{{10}^{-8}}M\text{ }to\text{ }{{10}^{-7}}M\]
B) between\[{{10}^{-7}}M\text{ }to\text{ }{{10}^{-8}}M\]
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. \[{{K}_{sp}}=1\times {{10}^{-8}}\] \[[{{A}^{+}}]={{10}^{-3}}M\] \[[{{B}^{+}}]=\frac{1\times {{10}^{-8}}}{{{10}^{-3}}}={{10}^{-5}}M\] 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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