Thermodynamic properties of clathrates: I. The heat capacity and entropy of argon in the argon quinol clathrates
- 1 April 1959
- journal article
- research article
- Published by Taylor & Francis in Molecular Physics
- Vol. 2 (2), 212-222
- https://doi.org/10.1080/00268975900100191
Abstract
Measurements have been made of the heat capacity Cp from ∼ 13°k to ∼ 273°k of five clathrates of argon and β-quinol. The argon content ranged from ∼ 20 per cent to ∼ 80 per cent of the maximum possible amount. Over much of the temperature range studied, Cp proved to be a linear function of the argon content, but from 13°k to 20°k, and from 50°k to 100°k the relation between Cp and argon content is obscure, and may, in fact, be non-linear. Estimates have been made of the contribution to Cp made by a mole of argon in the temperature region where Cp is a linear function of composition, and these experimental values have been compared with those calculated according to the theory of J. H. van der Waals, which is based on the cell model of Lennard-Jones and Devonshire. The agreement between theory and experiment is satisfactory.Keywords
This publication has 3 references indexed in Scilit:
- The statistical mechanics of clathrate compoundsTransactions of the Faraday Society, 1956
- 754. A new twin micro-calorimeter, and the heat of transformation of α- into β-quinolJournal of the Chemical Society, 1952
- 50. The structure of molecular compounds. Part III. Crystal structure of addition complexes of quinol with certain volatile compoundsJournal of the Chemical Society, 1947