What does the equilibrium expression for Kp look like for the reaction A(g) + B(g) ⇌ C(g)?

A. Kp = (P_C) / (P_A * P_B)
B. Kp = (P_A * P_B) / (P_C)
C. Kp = (P_C)^2 / (P_A * P_B)
D. Kp = (P_C) / (P_A + P_B)

Answer: Kp = (P_C) / (P_A * P_B)


Additional Information: Kp is defined as the ratio of the partial pressure of products to the partial pressure of reactants.