Heat Capacity of Gases by the Adiabatic Expansion Method
Year: 2025
Type: dissertation
Abstract: The theory of adiabatic expansions is given and an apparatus for the measurement of gaseous heat capacities by this method is described. As here applied the method is relative, involving a comparison with a standard gas, nitrogen. The heat capacities of oxygen, carbon dioxide, boron trifluoride, cyanogen, sulfur dioxide, ethylene, difluorodichloromethane, fluorotrichloromethane, sulfuryl fluoride, and phosphorus trifluoride found at temperatures ranging from 0° to 57° are compared with those reported by earlier investigators and with those derived from molecular data. In general the agreement is good to within 0.5%, but for sulfur dioxide and phosphorus trifluoride there are discrepancies between the observed and calculated values of about 3% and 8%, respectively. The difficulty with sulfur dioxide may possibly arise from an error in the equation of state, but the phosphorus trifluoride discrepancy stands quite without explanation.
Source: Caltech Library
DOI: 10.7907/fjb0-rt16
Author: Burcik, Emil Joseph
Institution: California Institute of Technology
Language: English
Subfield: Organic Chemistry
Field: Chemistry
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W6902956036
Cites:
Cited by:
Related to: