Question

The solubility product of \(\mathrm{AgBr}\) is \(4.9\times10^{-13}\) at a certain temperature. Calculate the solubility.

• A. \(4\times10^{-6}\ \text{mol dm}^{-3}\)
• B. \(4\times10^{-7}\ \text{mol dm}^{-3}\)
• C. \(7\times10^{-7}\ \text{mol dm}^{-3}\)
• D. \(3\times10^{-8}\ \text{mol dm}^{-3}\)

Hint:

For salts of type: \[ AB \rightleftharpoons A^+ + B^- \] the relation is: \[ K_{sp}=S^2 \] So, \[ S=\sqrt{K_{sp}} \]

Answer 1

The Correct Option is C