在一定温度下,向a L密闭容器中加入1 mol H2和2 mol Br2(g),发生如下

在一定温度下,向a L密闭容器中加入1 mol H22 mol Br2g),发生如下反应:

H2(g) + Br2 (g)2HBr(g),此反应达到平衡的标志是

   A.容器内颜色不随时间变化     B. 容器内H2Br2HBr的浓度之比为l:1:2

   C.容器内压强不随时间变化     D.单位时间内消耗n mol H2,同时生成2n mol HBr

答案

  A

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