When solid lead iodide is added to water, the equilibrium concentration of `I^(-)` becomes `2.6 xx 10^(-3)M` . What is the `K_(sp)` for `PbI_(2)` ?

The solubility of PbI_(2) is 1.3xx10^(-3)molL^(-1) . What is the K_(sp) for Pbl_(2) ?

The Kc for the reaction I_(2 (g)) hArr 2I_((g)) is 4 xx 10^(-3) . If the equilibrium concentration of atomic iodine is 4 xx 10^(-2) M . What is the concentration of molecular iodine ?