大学化学 >> 2018, Vol. 33 >> Issue (12): 51-55.doi: 10.3866/PKU.DXHX201804005

化学实验 上一篇    下一篇

饱和蒸气压测定实验中气流量调控装置的改进

陈云华*(),龚楚清,张海波,邓立志,夏春兰   

  • 收稿日期:2018-04-04 发布日期:2018-12-14
  • 通讯作者: 陈云华 E-mail:chenyh@whu.edu.cn

Improvement of Gas Flow Control Device for Saturated Vapor Pressure Measurements

Yunhua CHEN*(),Chuqing GONG,Haibo ZHANG,Lizhi DENG,Chunlan XIA   

  • Received:2018-04-04 Published:2018-12-14
  • Contact: Yunhua CHEN E-mail:chenyh@whu.edu.cn

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摘要：

在静态法测量液体的饱和蒸气压实验中，关键操作是调压控制。由于气体的不可见性会导致气流量控制较困难，使得在等压调节过程中经常发生因气流量过大而使空气倒灌入系统的问题。通过设计一种微小气流量调控装置，使调控操作可视化，可较好地解决操控问题，减少空气倒灌的发生，而且可避免反复调节，大大缩短了实验时间。

关键词: 物理化学实验, 饱和蒸气压, 等压调节

Abstract:

In the static method of saturated vapor pressure measurements, the key operation is to adjust the pressure of the system. Because of the invisibility of the gas, it is difficult to control the air flow, which often results in air pouring into the system due to excessive air flow in the constant pressure adjustment process. By designing a mini gas flow control device, the control operation is visualized; thus, problems associated with controlling the air flow can be avoided. Furthermore, frequent adjustment of the air flow becomes unnecessary, greatly reducing the lab hour.

Key words: Physical chemistry experiment, Saturated vapor pressure, Isopiestic adjustment

MSC2000: 

  • G64