A) 50
B) 100
C) 500
D) 1000
Correct Answer: B
Solution :
\[4{{S}^{3}}=3.2\times {{10}^{-11}}\] \[S=2\times {{10}^{-4}}\] Let solubility of \[Ca{{F}_{2}}\] is x in KF solution. \[{{K}_{sp}}=x{{(2x+4\times {{10}^{-3}})}^{2}};3.2\times {{10}^{-11}}=x\times {{10}^{-6}}\times 16\]\[x=2\times {{10}^{-6}}\]You need to login to perform this action.
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