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题型:单选题 题类:常考题 难易度:普通
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( )
①H2O(l)=H2(g)+ O2(g) △H=+285.8 kJ/mol
②H2(g)+ O2(g)=H2O(g) △H=-241.8 kJ/mol
③NaOH(aq)+HCl(aq)=NaCl(aq)+H2O(l) △H=-57.3kJ/mol
④C(s)+ O2(g)=CO(g) △H=-110.5 kJ/mol
⑤C(s)+O2(g)=CO2(g) △H=-393.5 kJ/mol
回答下列问题:
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