Among different types of salts have nearly same solubility product constant, but much smaller than o — Ionic Equilibrium Chemistry Question

💡 Solution & Explanation

For a salt generating $n$ total ions, its molar solubility $S$ is roughly proportional to $(K_{sp})^{1/n}$. Because $K_{sp} \ll 1$, taking a larger root (higher $n$) results in a value that is closer to 1 (i.e., a significantly larger solubility). Therefore, salts producing the maximum number of ions exhibit the highest molar solubility when comparing similar tiny $K_{sp}$ values. Therefore, correct answer is A.