试题与答案

下列方法中可以说明2HI(g)⇌H2(g)+I2(g)已达到平衡的是( ) A.

题型:选择题

题目:

下列方法中可以说明2HI(g)⇌H2(g)+I2(g)已达到平衡的是(  )

A.当c(HI):c(H2):c(I2)=2:1:1时

B.温度和体积一定时,容器内压强不再变化

C.单位时间内生成n mol H2的同时生成2n mol HI

D.温度和压强一定时,混合气体的密度不再变化

答案:

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