对于可逆反应N2(g)+3H2(g)2NH3(g)   ΔH<0,下列研究目的和示意图相符

对于可逆反应N2(g)+3H2(g)2NH3(g)   ΔH<0,下列研究目的和示意图相符的是(   )

答案

CA项,p1达平衡时间短,所以p1>p2,压强增大时,平衡正向移动,氨气的体积分数增大,不符合;B项,合成氨反应正向放热,温度升高平衡逆向移动,氮气的转化率变小,不符合;C项,向平衡体系中加氮气,反应速率加快,平衡正向移动,符合;D项,催化剂能缩短反应达到平衡时间,不符合。

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