The solubility product of `BaSO_(4)" at " 25^(@) C " is " 1.0 xx 10^(-9)`. What would be the concentration of `H_(2)SO_(4)` necessary to precipitate `BaSO_(4)` from a solution of `0.01" M Ba"^(+2)` ions

Options

A. `10^(-9)`
B. `10^(-8)`
C. `10^(-7)`
D. `10^(-6)`

Answer

C

Explanation

`BaSO_(4) hArr underset (0.01) underset ((S)) (Ba^(++)) + underset ((S))(SO_(4)^(--))`
`K_(sp) = S^(2) = S xx S = 0.01 xx S `
`S_((SO_(4)^(2-)))= (K_(sp))/(S_((Ba^(++)))) = (1xx10^(-9))/(0.01) = 10^(-7)` mole/litre .