## Chemistry: The Molecular Science (5th Edition)

$$K_c = \frac{[HCN][OH^-]}{[CN^-]}$$
$$K_c = \frac{[Products]}{[Reactants]}$$ $$K_c = \frac{[HCN][OH^-]}{[CN^-]}$$ ** Since $H_2O$ is a pure liquid, we do not put it in the equation for $K_c$.