Textbook Problem

Sodium cyanide is the salt of the weak acid HCN. Calculate the concentrations of ${\text{H}}_{\text{3}}{\text{O}}^{\text{+}}{\text{, OH}}^{-}\text{, HCN}$ and Na⁺ in a solution prepared by dissolving 10.8g of NaCN in enough water to make $\text{5}{\text{.00×10}}^{\text{2}}\text{mL}$of solution at 25 ^°C.