12O2gH2Ol的精选

问题详情：已知下列热化学方程式：①H2(g)＋1/2O2(g)===H2O(l)  ΔH＝－285.8kJ·mol－1②H2(g)＋1/2O2(g)===H2O(g) ΔH＝－241.8kJ·mol－1③C(s)＋1/2O2(g)===CO(g)   ΔH＝－110.5kJ·mol－1④C(s)＋O2(g)===CO2(g)    ΔH＝－393.5kJ·mo...