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) △H2=-393.5kJ/mol ,则C(s)+CO2(g)= 2CO(g)的△H
A.283.5kJ/mol | 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) △H2=-393.5kJ/mol ,则C(s)+CO2(g)= 2CO(g)的△H
A.283.5kJ/mol | B.172.5kJ/mol | C.-172.5kJ/mol | D.-504 kJ/mol |