Answer
(a) $$K_p = {P_{CO_2}P_{H_2O}}$$
(b) $$K_p = P_{SO_2}^2P_{O_2}$$
Work Step by Step
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.
