试题 试卷
题型:单选题 题类:常考题 难易度:普通
2016-2017学年湖北省重点高中联考高一下学期期中化学试卷
化学反应及平衡常数
平衡常数数值
500℃
800℃
①2H2(g)+CO(g)⇌CH3OH(g)
K1
2.5
0.15
②H2(g)+CO2(g)⇌H2O(g)+CO(g)
K2
1.0
2.50
③3H2(g)+CO2(g)⇌CH3OH(g)+H2O(g)
K3
0.375
①CH4(g)+H2O(g)⇌CO(g)+3H2(g)△H1=206.1kJ•mol﹣1
②CH4(g)+CO2(g)⇌2CO(g)+2H2(g)△H2=247.3kJ•mol﹣1
③CO(g)+H2O(g)⇌CO2(g)+H2(g)△H3
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