Vaporization of Iridium and Rhodium
- 1 June 1961
- journal article
- research article
- Published by AIP Publishing in The Journal of Chemical Physics
- Vol. 34 (6) , 1915-1918
- https://doi.org/10.1063/1.1731792
Abstract
The vaporization of iridium and rhodium have been studied by Knudsen effusion and Langmuir evaporation techniques. The vapor pressure of iridium over the temperature range of from 2100° to 2600°K is represented by the equation: logpmm=10.46— (33980/T), and the vapor pressure of rhodium over the temperature range of from 2050° to 2200°K by the equation: logpmm=10.28— (28300/T). Third‐law analyses of the data yield the following heats of vaporization:iridium, ΔH298=158.4±0.5 kcal/mole; rhodium, ΔH298=132.8±0.3 kcal/mole. Estimated boiling points for iridium and rhodium are 4800° and 3980°K, respectively.Keywords
This publication has 3 references indexed in Scilit:
- Thermodynamic calculations. I: Using free-energy functions and heat-content functionsJournal of Chemical Education, 1955
- The Vapor Pressure of Metallic TungstenPhysical Review B, 1913
- Experimentelle Bestimmung des Druckes gesättigter Quecksilberdämpfe bei 0° und höheren TemperaturenAnnalen der Physik, 1909