试题 试卷
题型:填空题 题类:常考题 难易度:普通
2016-2017学年湖北省部分重点中学高二上学期期中化学试卷
CO2(g)+3H2(g)⇌CH3OH(g)+H2O(l)△H=﹣akJ•mol﹣1;
CH3OH(g)═CH3OH(l)△H=﹣bkJ•mol﹣1;
2H2(g)+O2(g)═2H2O(l)△H=﹣ckJ•mol﹣1;
则表示CH3OH(l)燃烧热的热化学方程式为.
②稀溶液,H+(aq)+OH﹣(aq)=H2O(l);△H=﹣57.3kJ/mol
下列结论正确的是( )
①CH4(g)+2O2(g)=CO2(g)+2H2O(l) ΔH=+890.3 kJ·mol−1
②CH4(g)+2O2(g)=CO2(g)+2H2O(l) ΔH=−890.3 kJ·mol−1
③CH4(g)+2O2(g)=CO2(g)+2H2O(g) ΔH=−890.3 kJ·mol−1
④2H2(g)+O2(g)=2H2O(l) ΔH=−571.6 kJ·mol−1
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