在一定温度不同压强(p1<p2)下,可逆反应2X(g)2Y(g)+Z(g)中,生成物Z

在一定温度不同压强(p1<p2)下,可逆反应2X(g)2Y(g)Z(g)中,生成物Z在反应混合物中的体积分数(φ)与反应时间(t)的关系有以下图示,正确的是(  )

答案

B [p2>p1,则反应速率较大,到达平衡所需的时间要短,且平衡向逆向移动,Z的体积分

数比p1的要低。]

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