Behavior of the Heat of Formation in the Bismuth–Antimony System
- 1 July 1987
- journal article
- Published by Oxford University Press (OUP) in Bulletin of the Chemical Society of Japan
- Vol. 60 (7) , 2599-2603
- https://doi.org/10.1246/bcsj.60.2599
Abstract
Calorimetric studies on the behavior of the heat of formation in the bismuth–antimony system have been carried out at eight different compositions (10–80 at-% Sb). Values of the enthalpy and excess enthalpy at those compositions have been determined and tabulated at even temperature intervals of 10 °C in the range 50 to 650 °C. The heat of formation at 200 °C is given through the equation: H F=11.658x2−14.436x22+2.778x23 The heat of formation is positive and takes a maximum value (2556±11) J mol−1 at 50 at-% Sb. The heat of formation is larger than the heat of mixing. The excess over the value of the heat of mixing is attributed to the larger excess volume in the solid state.Keywords
This publication has 2 references indexed in Scilit:
- Modulationsverfahren zur genauen Regelung höherer TemperaturenChemie Ingenieur Technik - CIT, 1960
- Die Mischungswärmen im System Antimon-Wismut bei 700°CThe Science of Nature, 1959