试题 试卷
题型:单选题 题类:常考题 难易度:普通
2015-2016学年内蒙古包头市北重五中高二上学期期末化学试卷(理科)
H2(g)+I2(g)⇌HI(g)的平衡常数为K2 , 则K1、K2的关系为( )
起始浓度
c(H2)/mol/L
c(I2)/mol/L
c(HI)/mol/L
甲
0.01
0
乙
0.02
①CH4(g)+H2O(g)=CO(g)+ 3H2(g) △H1= + 206.2 kJ/ mol
②CO(g)+2H2(g)=CH3OH(g) △H2=- 90.1kJ/ mol
③2CH3OH(g) = CH3OCH3(g) + H2O(g) △H3=- 24.5kJ/ mol
④2CH3OH(g) C2H4(g) + 2H2O(g) △H4=- 29.1kJ/ mol
⑤CH3OCH3(g)== C2H5OH(g) △H5=- 50.7 kJ /mol
请回答下列问题:
①CO2(g) + 3H2(g) ⇌ CH3OH(l) + H2O(l) △H1 = -49.01KJ/mol
②2 CH3OH(l) ⇌ CH3OCH3(g) + H2O(l) △H2 = -24.52KJ/mol
③CO(g) + H2O(l) ⇌ CO2(g) + H2(g) △H3 = -41.17KJ/mol
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