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题型:单选题 题类:常考题 难易度:普通
黑龙江省孙吴县第一中学2017-2018学年高二上学期化学期中考试试卷
6C(s)+5H2(g)+3N2(g)+9O2(g) 2C3H5(ONO2)3(l) ΔH1
2 H2(g)+ O2(g)=2H2O(g) ΔH2
C(s)+ O2(g)=CO2(g) ΔH3
则反应4C3H5(ONO2)3(l)=12CO2(g)+10H2O(g)+O2(g)+6N2(g)的ΔH为( )
C(s)+O2(g)=2CO(g) △H=-220 kJ/mol
H-H、O=O和O-H键的键能分别为436、496和462 kJ/mol,则a为( )
C(s)+1/2O2(g) = CO(g) ΔH1=-111 kJ·mol-1
H2(g)+ 1/2O2(g)= H2O(g) ΔH2=-242 kJ·mol-1
C(s)+ O2(g)= CO2 (g) ΔH3=-394 kJ·mol-1
在同条件下, CO(g) + H2O(g) = H2(g)+ CO2 (g) ΔH ,则ΔH是( )
2H2(g)+O2(g)=2H2O(g) ΔH=-a kJ·mol-1 ①
2H2(g)+O2(g)=2H2O(l) ΔH=-b kJ·mol-1 ②
H2(g)+1/2O2(g)=H2O(g) ΔH=-c kJ·mol-1 ③
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