For the reaction C(s) + CO2(g) ⇌ 2CO(g) the partial pressure of CO2 and
CO are 2.0 and 4.0 atm respectively at equilibrium. The KP for the reaction is
0.5
4.0
8.0
32.0
KP = [PCO]2[PCO2] = 4 × 42 = 8