m mol C2H2跟n mol H2在密闭容器中反应,当该可逆反应达到平衡 时,生

m mol C2H2n mol H2在密闭容器中反应,当该可逆反应达到平衡

时,生成p mol C2H4。将反应后的混合气体完全燃烧,生成CO2

H2O,所需要氧气的物质的是                         (    )

A.(3m+n)mol                B.

C.(3m+n+2p)mol              D.

答案

D

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