已知在298K时下述反应的有关数据:C(s)+1/2O2(g)=CO(g)△H1=-110.5kJ∙mol-1,
C(s)+O2(g)=CO2(g)△H2=-393.5kJ∙mol-1,则C(s)+CO2(g)=2CO(g)的△H为
A.+283.5kJ∙mol-1 | B.+172.5kJ∙mol-1 | C.-172.5kJ∙mol-1 | D.-504kJ∙mol-1 |
已知在298K时下述反应的有关数据:C(s)+1/2O2(g)=CO(g)△H1=-110.5kJ∙mol-1,
C(s)+O2(g)=CO2(g)△H2=-393.5kJ∙mol-1,则C(s)+CO2(g)=2CO(g)的△H为
A.+283.5kJ∙mol-1 | B.+172.5kJ∙mol-1 | C.-172.5kJ∙mol-1 | D.-504kJ∙mol-1 |