在一定温度下,容器内某一反应中M、N的物质的量随反应时间变化的

在一定温度下,容器内某一反应中MN的物质的量随反应时间变化的曲线如下图,下列表述中正确的是(     

A.反应的化学方程式为:2 MN

Bt2时,正逆反应速率相等,达到平衡 

Ct3时,正反应速率大于逆反应速率   

Dt1时,N的浓度是M浓度的2     

答案

D

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