2H2gO2g2H的精选

问题详情：已知①2C(s)+O2(g)＝2CO(g)；△H＝－221．0kJ·mol－1②2H2(g)+O2(g)=2H2O(g)；△H＝－483．6kJ·mol－1，则制备水煤气的反应C(s)+H2O(g)=CO(g)+H2(g)；△H为  A.+262.6kJ·mol—1            B．－131．3kJ·mol－1 C．－352．3kJ·m...

问题详情：已知:①2C(s)+O2(g)2CO(g)ΔH=-221.0kJ·mol-1;②2H2(g)+O2(g)2H2O(g)ΔH=-483.6kJ·mol-1。则制备水煤气的反应C(s)+H2O(g)CO(g)+H2(g)的ΔH为()A.+262.6kJ·mol-1B.-131.3kJ·mol-1C.-352.3kJ·mol-1D.+131...