试题 试卷
题型:综合题 题类:常考题 难易度:普通
①2H2(g)+O2(g)=2H2O(g) ΔH1=-480 kJ·mol-1
②N2(g)+2O2(g)=2NO2(g) ΔH2=68 kJ·mol-1
③N2(g)+3H2(g)=2NH3(g) ΔH3=-92 kJ·mol-1
NH3(g)燃烧生成NO2(g)和H2O(g) 的热化学方程式为1。
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组卷次数:8次 +选题
H2S(g)+O2(g)═SO2(g)+H2O(g)△H1
2H2S(g)+SO2(g)═S2(g)+2H2O(g)△H2
H2S(g)+O2(g)═S(g)+H2O(g)△H3
2S(g)═S2(g)△H4
则△H4的正确表达式为( )
反应Ⅰ:CO2(g)+3H2(g) CH3OH(g)+H2O(g) △H1=-49.58 kJ•mol-1
反应Ⅱ:CO2(g)+H2(g) CO(g)+H2O(g) △H2
反应Ⅲ:CO(g)+2H2(g) CH3OH(g) △H3=-90.77 kJ•mol-1
回答下列问题:
① CO(g)+2H2(g) CH3OH(g) △H 1=-90.7 kJ·mol-1
② 2CH3OH(g) CH3OCH3(g)+H2O(g) △H 2=-23.5 kJ·mol-1
③ CO(g)+H2O(g) CO2(g)+H2(g) △H 3=-41.2kJ·mol-1
反应I:
反应Ⅱ:
反应Ⅲ:
反应Ⅳ:CO(g) +2H2(g)CH3OH(g) ΔH4
回答下列有关问题:
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