已知:CO(g) + H2O(g)H2(g) + CO2(g)的平衡常数K随温度

题型:选择题

问题:

已知:CO(g) + H2O(g) H2(g) + CO2(g)的平衡常数K随温度的变化如下表,下列说法正确的是(  )

温度/℃4005008301000
平衡常数K10910.6

A.正反应是吸热反应

B.恒温时增大压强,正反应速率增大

C.830℃时,反应达到平衡,c(CO)=c(CO2)

D.400℃时,恒容反应器中投入CO、H­2O、H2、CO2物质的量分别为5 mol、1 mol、2 mol、3mol,反应向逆方向进行

题型:选择题

将下列陈述句改为反问句。   

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