已知在298K时下述反应的有关数据:
①C(s)+O2(g)═CO(g)△H1=﹣110.5kJ•mol﹣1
②C(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:
①C(s)+O2(g)═CO(g)△H1=﹣110.5kJ•mol﹣1
②C(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 |
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