在T℃时,向容积为2L的恒容密闭容器中充入1molCO
2和一定量的H
2发生反应:CO
2(g)+2H
2(g)⇌HCHO(g)+H
2O(g) ;∆H<0,若起始时容器内气体压强为1.2
kPa,达到平衡时,HCHO的分压与起始的
![](https://math.21cnjy.com/MathMLToImage?mml=%3Cmath+xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F1998%2FMath%2FMathML%22%3E%3Cmrow%3E%3Cmfrac%3E%3Cmrow%3E%3Cmtext%3En%3C%2Fmtext%3E%3Cmrow%3E%3Cmo%3E%28%3C%2Fmo%3E%3Cmrow%3E%3Cmsub%3E%3Cmtext%3EH%3C%2Fmtext%3E%3Cmtext%3E2%3C%2Fmtext%3E%3C%2Fmsub%3E%3C%2Fmrow%3E%3Cmo%3E%29%3C%2Fmo%3E%3C%2Fmrow%3E%3C%2Fmrow%3E%3Cmrow%3E%3Cmtext%3En%3C%2Fmtext%3E%3Cmrow%3E%3Cmo%3E%28%3C%2Fmo%3E%3Cmrow%3E%3Cmsub%3E%3Cmrow%3E%3Cmtext%3ECO%3C%2Fmtext%3E%3C%2Fmrow%3E%3Cmtext%3E2%3C%2Fmtext%3E%3C%2Fmsub%3E%3C%2Fmrow%3E%3Cmo%3E%29%3C%2Fmo%3E%3C%2Fmrow%3E%3C%2Fmrow%3E%3C%2Fmfrac%3E%3C%2Fmrow%3E%3C%2Fmath%3E)
关系如图所示:下列说法错误的是( )
- A、b点的化学平衡常数KP≈3.5
- B、容器内H2O的体积分数保持不变,说明达到平衡状态
- C、若5min到达c点,则v(H2)= 0.24mol
L-1
min-1 - D、c点时,再加入CO2(g)和H2O(g),使二者分压均增大0.05 kPa,α(H2)增大