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题型:单选题 题类:常考题 难易度:普通
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组卷次数:11次 +选题
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
反应Ⅰ:CO2(g)+3H2(g) CH3OH(g)+H2O(g) △H1=-49.6 kJ/mol
反应Ⅱ:CH3OCH3(g)+H2O(g) 2CH3OH(g) △H2=+23.4 kJ/mol
反应Ⅲ:2CO2(g)+6H2(g) CH3OCH3(g)+3H2O(g) △H3
已知:H2O(g) = H2O(l) △H =﹣44 kJ/mol
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