Open AccessThe Vapor Pressure and Heat of Vaporization of Bromine Triflouride
Author(s) -
J W G D Grisard and Oliver
Publication year - 1951
Language(s) - English
Resource type - Reports
DOI - 10.2172/967834
Subject(s) - enthalpy , thermodynamics , vapor pressure , nitromethane , bromine , chemistry , analytical chemistry (journal) , physics , organic chemistry , chromatography
The vapor pressure of bromine trifluoride has been measured over the range 39 to 155 C. and the following equation was derived by methods of least squares to represent the experimental data. log{sub 10}P{sub mm} = 7.74853 - l685.8/(t + 220.57). The heat of vaporization was estimated from the following equation which is based upon the Clausius-Clapeyron relation. {Delta}H{sub cal/mole} = 7714 [(t + 273.16)/(t + 220.57)]{sup 2}. In continuation of the program to measure the physical properties of interhalogens, the vapor pressure of bromine trifluoride has been determined. Ruff and Braida (4) measured some of the physical and chemical properties including the vapor pressure over a limited range, 4 to 136 mm. The present investigation extends the vapor pressure data to 2 l/2 atmospheres on material of high purity