您所在的当前位置：高中化学试题 >

化学平衡状态的判断

> 一定温度下，一定体积的容器中，可逆反应A（g）+3B（g）⇌2C（g）达到平衡的标志是（　　） A．A、B、C的分子数比为1：3：2 B．A、B、C的浓度相等 C．容器中压强不再变化 D．单位时间消耗nmolA，同时生成2nmolC

问题：

发布时间：2024-09-11

一定温度下，一定体积的容器中，可逆反应A（g）+3B（g）⇌2C（g）达到平衡的标志是（　　）

A．A、B、C的分子数比为1：3：2

B．A、B、C的浓度相等

C．容器中压强不再变化

D．单位时间消耗nmolA，同时生成2nmolC

参考答案：

提问用户：84***GK1

可能感兴趣的题目：

1 根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。 71 Many Americans make a promise that they will find a new or better job in the new year. And many businesses decide to fill empty positions this time of year. There are many ways to find a job. It can be as easy as walking into a neighborhood store to look at its announcement board. Local stores often have areas where people can put small signs telling what kind of service they need or can provide. 72 Or, job searchers can look in the newspaper. Local newspapers have employment announcements placed by companies seeking workers. 73 Now, people in 450 cities around the world are using the Web to meet people or find a job. It is estimated that two million new job listings are offered each month. 74 It is because almost every one of them has the Career Exploration center for people to get help in finding a job. Of course, looking for a job requires knowing what kind of work you want to do. For example, there is a book called What Color is Your Parachhute? by Richard Bolles. This book has been helping people choose a career since it was first published in 1970. 75 They can help people find jobs by first helping them understand their strengths, goals and interests. And then they provide them with methods and resources to help people find the right job. A．It is easy to find a good job at that time. B．Such services include caring for children or cleaning houses. C．Also, some experts help people find jobs. D．Another popular tool for finding jobs is the Internet. E. January is the top month for getting a new job. F. Jobs can often be offered to men. G. Besides, people can find a job through a college or university.
2 如图所示的装置处于静止状态．甲、乙两物体的密度分别为ρ 甲、ρ 乙，其体积之比V 甲：V 乙=3：4，质量之比m 甲：m 乙=4：5．若不计绳重、轮重及摩擦，则下列说法正确的是 A.甲、乙的密度之比ρ甲：ρ乙=3：5 B.甲、乙受到的合力都为零 C.绳子对乙的拉力等于G甲 D.乙对水平地面的压力与乙的重力之比为3：5
3 若表示虚数单位）,则 A．1 B．2 C．-2 D．-1
4 氢化钠（NaH）是一种离子晶体，它与水反应时生成NaOH和H 2。现有mg氢化钠和铝粉的混合物与足量的水充分反应后，并收集到ng氢气。求混合物中铝的质量
5 It was not until she collected enough material to create her new novel． A．did she beg4n B．when she began C．that she began D．that did she begin
6 长江黄河都流经的省区是 A.青、藏 B.青、川 C.藏、川 D.藏、云
7 为促进海岛的开发，特别是无居民海岛（不作为常住户口居住地的岛屿、岩礁和低潮高地等）开发，首先要完善下列哪些设施 ①交通运输 ②能源供应设施 ③淡水供应设施 ④机场建设 A．①②③④ B．①②③ C．①② D．④
8 某研究所计划利用“神七”宇宙飞船进行新产品搭载实验，计划搭载新产品A、B，要根据该产品的研制成本、产品重量、搭载实验费用和预计产生收益来决定具体安排，通过调查，有关数据如表：产品A（件）产品B（件）研制成本、搭载费用之和（万元） 20 30 计划最大资金额300万元产品重量（千克） 10 5 最大搭载重量110千克预计收益（万元） 80 60 试问：如何安排这两种产品的件数进行搭载，才能使总预计收益达到最大，最大收益是多少？
9 The writers, publishers and printers, they are, we never know, are making silent money. A．who B．whom C．whatever D．whenever
10 东亚唯一的内陆国是 A.韩国 B.日本 C.朝鲜 D.蒙古

一定温度下，一定体积的容器中，可逆反应A（g）+3B（g）⇌2C（g）达到平衡的标志是（ ） A．A、B、C的分子数比为1：3：2 B．A、B、C的浓度相等 C．容器中压强不再变化 D．单位时间消耗nmolA，同时生成2nmolC

可能感兴趣的题目：

一定温度下，一定体积的容器中，可逆反应A（g）+3B（g）⇌2C（g）达到平衡的标志是（　　）

A．A、B、C的分子数比为1：3：2

B．A、B、C的浓度相等

C．容器中压强不再变化

D．单位时间消耗nmolA，同时生成2nmolC