試題詳解

73. At a certain temperature, placing one mole of ammonia gas into a sealed container results in 40% ammonia decomposition at equilibrium. What is the equilibrium constant KC for ammonia decomposition at that temperature? (ammonia decomposition: 2NH_3(g) → N_2(g) + 3H_2(g))
(A) 0.043
(B) 0.12
(C) 0.80
(D) 8.33
(E) 17