NiO = Ni + 1/2O2 ------------- △H = 56310(㎈), △S = 20.57(㎈) 필요한 온도는 ? △G = 56310 - T*20.57 ----------(1) △G < 0 56310 - T*20.57 < 0 56310 / 20.57 < T 2737.4 < T (K˚) 2464 < T (℃) 발생되는 산소분압은 ? △G = 56310 - T*20.57 ---------(1) △G = 56310 - 2737.4 x 20.57 △G = 1.6820 △G = - RTlnK ----------(2) △G = - RT*2.303*log{(aNi*PO2^(1/2)/aNiO} R = 1.987 (㎈/mol.K˚) T = 2737.4 (K˚) aNi = 1, aNiO = 1, PO2 = ? ..