物理化学学报 >> 1996, Vol. 12 >> Issue (02): 169-172.doi: 10.3866/PKU.WHXB19960216

研究简报 上一篇    下一篇

羧酸气体热容的测定与研究

邵爽,俞庆森,方文军,林瑞森   

  1. 浙江教育学院化学系,杭州 310012|浙江大学化学系,杭州 310027
  • 收稿日期:1995-04-25 修回日期:1995-07-01 发布日期:1996-02-15
  • 通讯作者: 林瑞森

Measurement and Study on the Vapor Heat Capacities of Carboxylic Acids

Shao Shuang,Yu Qing-Sen,Fang Wen-Jun,Lin Rui-Sen   

  1. Department of Chemistry,Zhejiang Educational College,Hangzhou 310012|Department of Chemistry,Zhejiang University,Hangzhou 310027
  • Received:1995-04-25 Revised:1995-07-01 Published:1996-02-15
  • Contact: Lin Rui-Sen

关键词: 羧酸, 量热, 气体热容, 气相缔合

Abstract:

The vapor heat capacities of acetic acid, propionic acid, n-butyric acid at various temperatures under atmospheric pressure were measured with a multicomponent vapor flow calorimeter. The results show that the vapor heat capacities of carboxylic acids are much larger than those of the ideal gases at the same temperature and that the vapor heat capacities decrease with increasing temperature. The effect of association in the vapor phase on the vapor heat capacity was studied.

Key words: Carboxylic acid, Calorimetry, Vapor heat capacity, Association