Step 2: Understand that Kp is the equilibrium constant expressed in terms of partial pressures.
Step 3: Write down the products and reactants of the reaction.
Step 4: For the products (NH3), since there are 2 moles, we will square its partial pressure: (P_NH3)^2.
Step 5: For the reactants (N2 and H2), write their partial pressures. N2 has 1 mole, so it is (P_N2) and H2 has 3 moles, so we will cube its partial pressure: (P_H2)^3.
Step 6: Combine these into the Kp expression: Kp = (P_NH3)^2 / ((P_N2)(P_H2)^3).
