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