试题 试卷
题型:单选题 题类:常考题 难易度:普通
反应热的大小比较
① H2(g) +I2(?) 2HI(g) △H1=-9.48kJ·mol-1
② H2(g) +I2(?) 2HI(g) △H2=+26.48kJ·mol-1
下列判断错误的是( )
①C(s) + H2O(g)=CO(g) + H2 (g) ΔH1 = akJ·mol−1
②CO(g) + H2O(g)=CO2(g) + H2 (g) ΔH2 = bkJ·mol−1
③CO2 (g) + 3H2 (g)=CH3OH(g) + H2O(g) ΔH3 = ckJ·mol−1
④2CH3OH(g)=CH3OCH3 (g) + H2O(g) ΔH4 = dkJ·mol−1
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