1.已知:
①C(s)+O
2(g)═CO
2(g)ΔH
1②CO
2(g)+C(s)═2CO(g)ΔH
2③2CO(g)+O
2(g)═2CO
2(g)ΔH
3④4Fe(s)+3O
2(g)═2Fe
2O
3(s)ΔH
4⑤3CO(g)+Fe
2O
3(s)=3CO
2(g)+2Fe(s)ΔH
5下列關于上述反應焓變的判斷正確的是( ?。?/div>
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