2C + MnO2 = Mn + 2CO
0 -520.0 0 -110.5*2 kJ/mol
5.74*2 53.05 32.01 197.67*2 J/K/mol
deltaH = -110.5*2 + 520.0 = 299.0kJ/mol
deltaS = 197.67*2 + 32.01 - 5.74*2 - 53.05 = 362.82 J/K/mol = 0.36282kJ/K/mol
T > = 299.0 / 0.36856 = 824.1K
理论计算,温度高于824.1K就可以了.