Equilibrium Question 187

Question: The solubility of $ BaSO_4 $ in water is $ 2.33\times {10^{-3}},gm/litre. $ Its solubility product will be (molecular weight of $ BaSO_4=233) $ [AIIMS 1998]

Options:

A) $ 1\times {10^{-5}} $

B) $ 1\times {10^{-10}} $

C) $ 1\times {10^{-15}} $

D) $ 1\times {10^{-20}} $

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Answer:

Correct Answer: B

Solution:

The solubility of $ BaSO_4 $ in g/litre is given $ 2.33\times {10^{-3}} $

$ \because $ in mole/litre. $ n=\frac{W}{m.,wt} $

$ =1\times {10^{-5}} $

$ =,\frac{2.33\times {10^{-3}}}{233} $ Because $ BaSO_4 $ is a compound $ K _{sp}=S^{2}={{[1\times {10^{-5}}]}^{2}} $

$ =1\times {10^{-10}} $



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