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题型:单选题 题类:常考题 难易度:容易
2015-2016学年河南省安阳二中高二上学期期中化学试卷
①CH4(g)+2O2(g)═CO2(g)+2H2O(g)△H1CH4(g)+2O2(g)═CO2(g)+2H2O(l)△H2
②NaOH(aq)+ H2SO4(浓)═ Na2SO4(aq)+H2O(l)△H3
NaOH(aq)+CH3COOH(aq)═CH3COONa(aq)+H2O(l)△H4 .
C(s)+O2(g)═CO2(g)△H=﹣393.5kJ•mol﹣1
则2Fe(s)+ O2(g)═Fe2O3(s)的△H是( )
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