在体积不变的密闭容器中发生的反应是CO(g)+H 2 O(g) CO 2 (g)+H 2 (g)下列情况中,能说明反应达到化学平衡状态的是
A.
混合气体的密度不再改变
B.
混合气体的质量不再改变
C.
混合气体的物质的量不再改变
D.
混合气体中CO的体积分数不再改变
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