University Chemistry ›› 2016, Vol. 31 ›› Issue (3): 49-54.doi: 10.3866/PKU.DXHX20160349

• Chemistry Laboratory • Previous Articles     Next Articles

The Application of New Gas Pressure Adjustment Device in the Experiment on Saturated Vapor Pressure Measurements

Chu-Qing GONG*(),Yuan DENG,Li-Zhi DENG,Chun-Lan XIA   

  • Published:2016-04-06
  • Contact: Chu-Qing GONG E-mail:gongcq@whu.edu.cn

Abstract:

By introducing two gas buffer vessels, one for increasing pressure and the other for decreasing pressure, which can be operated independently, a new apparatus was established on the adjustment of gas pressure through controlling of air input. It was easy to control the gas pressure of buffer vessel continuously following the variation of vapor tension in different temperatures. Experimental data can be obtained when the gas and liquid are in equilibrium by manipulating the slow move of U shape liquid. This system has achieved satisfactory effects in the application for its advantages on easiness in operation, stability and data accuracy, etc.

Key words: Physicochemical experiment, Saturated vapor pressure of liquid, Gas-liquid equilibrium

MSC2000: 

  • O64