下列说法正确的是(    ) A.放热反应均是自发反应 B.H2、I2、HI平

 下列说法正确的是(    )

A.放热反应均是自发反应

BH2I2HI平衡混合气加压后颜色变深,能用勒夏特列原理解释

C.物质的量增加的反应,S为正值

D2CO(g)=2C(s)+O2(g)  已知H>0,则一定不能自发进行

答案

D

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