试题 试卷
题型:单选题 题类:常考题 难易度:普通
浙江省衢州市2019-2020学年高一下学期化学期末考试试卷
CO(g)+H2O(g)⇌CO2(g)+H2(g)△H=﹣41kJ•mol﹣1
CaO(s)+CO2(g)⇌CaCO3(s)△H=﹣172kJ•mol﹣1
CO2(g)+4H2(g)⇌CH4(g)+2H2O(g)△H=﹣187kJ•mol﹣1
①2H2(g)+O2(g)=2 H2O(1) ΔH1= -akJ/mol
②H2(g)+ O2(g)=H2O (g) ΔH2= -bkJ/mol
③C(s)+ O2(g)=CO(g) ΔH3 = -ckJ/mol
④C(s)+ O2 (g)=CO2(g) ΔH4= -dkJ/mol
下列说法正确的是( )
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