反应N2(g)+3H2(g) 2NH3(g)在密闭容器内进行,分别用N2、H2、NH3三种物质在

反应N2(g)+3H2(g) 2NH3(g)在密闭容器内进行,分别用N2、H2、NH3三种物质在单位时间内浓度的变化表示该反应的速率为v(N2)、v(H2)、v(NH3),则三者的关系正确的是(    )

    A.v(N2)=v(NH3)         B.3v(H2)=2v(NH3)            C.v(N2)=3v(H2)        D.3v(N2)=v(H2)

   

答案

解析:用任一物质的浓度变化表示的速率之比等于其化学计量数之比。

    答案:D

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