## Chemistry (4th Edition)

(a) $$K_p = {P_{CO_2}P_{H_2O}}$$ (b) $$K_p = P_{SO_2}^2P_{O_2}$$
The $K_p$ expression follows this pattern: $$K_p = \frac{P_{products}}{P_{reactants}}$$ Where the exponent of each partial pressure is equal to the balance coefficient of the compound. Only compounds in the form of gases appear in this expression.