在一定体积的密闭容器中，进行如下化学反应：CO2(g)＋H2(g)CO(g)＋H

发布时间：2017-04-18 13:09 │ 来源：www.tikuol.com

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问题：

在一定体积的密闭容器中，进行如下化学反应：CO₂(g)＋H₂(g)CO(g)＋H₂O(g) 其化学平衡常数K和温度t的关系如下表

回答下列问题

（1）该反应的化学平衡常数表达式为K＝_____________。

（2）该反应为_________反应（填“吸热”或“放热”）。

（3）能判断该反应是否达到化学平衡状态的依据是__________（多选扣分）。

A．容器中压强不变 B．混合气体中 c(CO)不变 C．υ正(H₂)＝υ逆(H₂O) D．c(CO₂)＝c(CO)

（4）某温度下，平衡浓度符合下式：c(CO₂)·c(H₂)＝c(CO)·c(H₂O)，试判断此时的温度为_______℃。

（5）某温度下，将CO和水蒸气各1mol置于密闭容器中反应，达到平衡后测得CO₂为0．6mol，再通入

4mol水蒸气，达到新的平衡后CO₂的物质的量的范围是____________。

考点：化学平衡常数达到化学平衡的标志化学平衡的有关计算

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现有四个有理数3，4，﹣6，10，这四个数（每个数用且只用一次）进行加、减、乘、除四则运算，写出两种本质不同的运算：①（），②（）．

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Some pioneering work that began as an attempt to discover ways to increase production efficiency led to the founding of the human relations movement in industry and to the development of motivational skills and tools for managers. In 1927 researchers were involved in determining the optimum amount of lighting, temperature, and humidity (with lighting being considered the most important) for the assembly of electronic components at Western Electric. The researchers found that lighting had no consistent effect on production. In fact, production sometimes increased when lighting was reduced to the level of ordinary moonlight! The important part of this experiment began when two Harvard researchers, Elton Mayo and Fritz Roethlisberger, were brought in to investigate these unexpected results further. They found that workers were responding not to the level of lighting but to the fact that they were being observed by the experimenters.
This phenomenon came to be known as the Hawthorne effect since the experiments were conducted at the Western Electric Hawthorne Plant. This was the first documented and widely published evidence of the psychological effects on doing work, and it led to the first serious effort aimed at examining psychological and social factors in the workplace. Further experiments were continued for five years. Generally, the researchers concluded from their experiments that economic motivation (pay) was not the sole source of productivity and, in some cases, not even the most important source. Through interviews and test results, the researchers focused on the effects of work attitudes, supervision, and the peer group and other social forces, on productivity.
Their findings laid the groundwork for modem motivation theory, and the study of human factors on the job, which continues to this day in such common practices as selection and training, establishing favorable work conditions, counseling, and personnel operations. The contributions of this experiment shifted the focus of human motivation from economics to a multifaceted approach including psychological and social forces.

The word "it" underlined in, Paragraph 2 refers to ______.

A．the experiment

B．economic motivation

C．the Western Electric Hawthorn plant

D．the Hawthorne effect

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对小脑的描述，错误的是（）

A．小脑扁桃体属新小脑

B．小脑上面平坦，下面的中间部凹陷

C．原小脑就是绒球小结叶

D．旧小脑就是前叶

E．前面借3对小脑脚连于脑干背面

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不论全部成本法还是变动成本法其期间成本都包含的项目是（）

A.直接材料

B.变动制造费

C.固定制造费用

D.管理及推销费用

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改善要求管理人员不断地评估现有的作业标准，并且尽可能予以改善。（）

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