试题 试卷
题型:综合题 题类:常考题 难易度:普通
①H2(g)+O2(g)═H2O(l)△H=﹣285.8kJ/mol
②H2(g)+O2(g)═H2O(g)△H=﹣241.8kJ/mol
③C(s)+O2(g)═CO(g)△H=﹣110.5kJ/mol
④C(s)+O2(g)═CO2(g)△H=﹣393.5kJ/mol
回答下列各问题:
CO:2CO(g)+O2(g)═2CO2(g);△H=﹣566.0kJ/mol.
丙烷:C3H8(g)+5O2(g)═3CO2(g)+4H2O(l);△H=﹣2221.5kJ/mol.
正丁烷:C4H10(g)+6.5O2(g)═4CO2(g)+5H2O(l);△H=﹣2878.0kJ/mol.
异丁烷:C4H10(g)+6.5O2(g)═4CO2(g)+5H2O(l);△H=﹣2869.6kJ/mol.
下列有关说法正确的是( )
2H2(g)+O2(g)═2H2O(l)△H=﹣571.6kJ•mol﹣1
C3H8(g)+5O2(g)═3CO2(g)+4H2O(l)△H=﹣2220kJ•mol﹣1
试回答下列问题:
Na2O2(s)+CO2(g)=Na2CO3(s)+ O2(g) △H=-226kJ/mol
根据以上热化学方程式判断,下列说法正确的是( )
①H2(g)+ O2(g)=H2O(l) ΔH=-285.8 kJ/mol
②H2(g)+ O2(g)=H2O(g) ΔH=-241.8 kJ/mol
③C(s)+ O2(g)=CO(g) ΔH=-110.5 kJ/mol
④C(s)+O2(g)=CO2(g) ΔH=-393.5 kJ/mol
回答下列问题:
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