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题型:单选题 题类:常考题 难易度:容易
浙江省名校协作体2018-2019学年高二下学期化学期末考试试卷
下列说法正确的是( )
①C(s) + H2O(g)=CO(g)+H2(g) ΔH1=a kJ•mol-1
②CO(g) + H2O(g)=CO2(g)+H2(g) ΔH2=b kJ•mol-1
③CO2(g)+3H2(g)=CH3OH(g)+H2O(g) ΔH3 =c kJ•mol-1
④2CH3OH(g) =CH3OCH3(g)+H2O(g) ΔH4=d kJ•mol-1
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
回答下列问题:
⑵C(s)+O2(g)=CO2(g) △H2 ⑶2H2(g)+O2(g)=2H2O(l) △H3 ⑷2CO2(g)+4H2(g)=CH3COOH(l)+2H2O(l) △H4
⑸2C(s)+2H2(g)+O2(g)=CH3COOH(l) △H5
下列关于上述反应的焓变的判断正确的是( )
①4NH3(g)+4NO(g)+O2(g) 4N2(g)+6H2O(g) △H1=akJ·mol-1
②4NH3(g)+2NO2(g)+O2(g) 3N2(g)+6H2O(g) △H2=bkJ·mol-1
副反应4NH3(g)+5O2(g) 4NO(g)+6H2O(g) △H4=dkJ·mol-1
可以计算出反应2NO(g)+O2(g) 2NO2(g)的△H为( )
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