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题型:单选题 题类:常考题 难易度:普通
浙江省之江教育评价2020-2021学年高三下学期化学开学考试试卷
CuSO4·5H2O (s)= CuSO4(s)+5H2O(1) ∆H1
CuSO4(s)= CuSO4(aq) ∆H2
CuSO4(aq)= Cu2+(aq)+ (aq) ∆H3
CuSO4·5H2O (s)= Cu2+(aq)+ (aq)+5H2O(1) ∆H4
②C(s)+O2(g)=CO2(g)△H2=﹣393.5kJ/mol
③2H2(g)+O2(g)=2H2O(l)△H3=﹣285.8kJ/mol
I.工业上利用CO和水在沸石分子筛表面反应制氢气,CO(g)+H2O(g)⇌CO2(g)+H2(g)
2H2O(g)=O2(g)+2H2(g) ΔH1
Cl2(g)+H2(g)=2HCl(g) ΔH2
2Cl2(g)+2H2O(g)=4HCl(g)+O2(g) ΔH3
则ΔH3与ΔH1和ΔH2间的关系正确的是( )
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