设:T 平衡常数为K10 平衡常数为K20 则:InK1(①)=-△H°m/RT1+Am/R(1) InK2(T)=-△H°m/RT2+△Sm/R(2) (2)-(1) K 0 2 2 In K10 R T,×T设: T1 —— 平衡常数为K1 θ T2 —— 平衡常数为K2 θ 则:lnK1 θ (T)=-ΔrHθ m / RT1 +ΔrS θ m / R (1) lnK2 θ (T)=-ΔrHθ m / RT2 +ΔrS θ m / R (2) (2)-(1) ln K2 θ K1 θ = ΔrHθ m R T2 – T1 T2 ×T1