2CsO2g2CO的精选

问题详情：已知①2C(s)+O2(g)===2CO（g）   △H=-221.0kJ·mol-1                   ②2H2(g)+O2(g)===2H2O（g）  △H=-483.6kJ·mol-1则反应C(s)+H2O(g)===CO(g)+H2(g)的△H为           ...