在体积不变的密闭容器中,2A(g)+2B(g)3C(g)+D(g)达到平衡状态的标志

在体积不变的密闭容器中2A(g)2B(g)3C(g)D(g)达到平衡状态的标志是

         A.单位时间内生成2n mol A,同时生成n mol D 

         B.容器内压强不随时间而变化

         C.单位时间内生成n mol B,同时消耗1.5n mol C

         D.容器内混合气体密度不随时间而变化

答案

A

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