## Abhisar one year ago The solubility product of BaSO4 at 25 C is 10^-9. What would be the concentration of H2SO4 necessary to precipitate BaSO4 from a solution of 0.01 M Ba+2 ions

1. Abhisar

I am calculating it to be $$\sf 10^{-7}$$

2. Abhisar

But the answer says $$\sf 10^{-6}$$

3. Abhisar

Any idea @Photon336 ?

4. Abhisar

@Rushwr ?

5. Photon336

$ksp = x ^{2} = [Ba ^{2+}][So4^{2-}]$ $\frac{ [10^-9] }{ [0.01] } = 10^{-7}$ by eyeballing this I believe that's when it's saturated. so it would have to be more than that 10^-6 @abishar I agree with @rushwr

6. Abhisar

Oh Right!!!!!!!!!!!!!

7. Photon336

I think that's the concentration when it's saturated that means that it won't precipitate at this concentration , @rushwr what do you think?

8. Abhisar

I get it now, it should be anything greater than $$\sf 10^{-7}$$ and hence $$\sf 10^{-6}$$

9. Abhisar

Thanx both of you c: Appreciate it..

10. Photon336

Absolutely, anytime