题目

如下图所示为关于N2+3H22NH3;ΔH<0的平衡移动,影响该平衡移动的原因是(    ) A.升高温度,同时加压               B.减小压强,同时降温 C.增大反应物浓度,使用催化剂       D.增大反应物浓度,同时减小生成物浓度 答案:D 解析:升高温度,正、逆反应速率都增大;减压降温正、逆反应速率都减小。增大反应物的浓度,v(正)增大,减小生成物的浓度,v(逆)减小,符合该图情况。A)请根据括号中所给的汉语写出单词,使句子意思完整正确,并将答案填写在答题卡相应横线上。【1】—Have you watched the National Day parade on TV?—Of course. It has won high __________ (赞扬) all over the world.【2】Sarah is so bright, __________ (活泼的) and cheerful that all of us would like to make friends with her.【3】—What does Han Mei always come top of the class in exams, I wonder?—__________ (凭借) hard work and her wisdom she has achieved a lot of success.【4】—My mother tells me to have extra English lessons on Sundays. What shall I do?—Don’t let me __________ (影响) you. Make up your own mind.【5】—How are you getting on at this school, Daniel?—Excellent. My __________ (决定) to study in our school is the best choice I’ve ever made.
化学 试题推荐