Abstract
The heat capacity of a mixed crystal of ammonium chloride and ammonium bromide, of formula NH
4
Br,
0.55
Cl
0.45
, has been measured for temperatures in the range 8-300 K in one calorimeter, and 270K-476K in a second calorimeter. The mixed crystal undergoes a >.-type transition at
T
= 271.2K, and an essentially isothermal transition, to a facecentred cubic crystal, at 382.8 K. At this second transition, considerable superheating of the low-temperature form and supercooling of the hightemperature form can occur. Thermodynamic parameters for the mixed crystal are given at rounded temperatures.
Reference5 articles.
1. Andrews J . T. S. N orton P . A. & W estrum E . F . J r . 1978 chem. Therm odynam . 10 949.
2. B artel J . J . Callanan J . E . & W estrum E . F . J r . 1979 chem. Therm odynam . (In th e press.)
3. F la tt R . & B u rk h a rd t G. 1944 Helv. chim. A cta. 27 1605.
4. Milnes M. V. & W allace W . E . 1961 J . phys.Chem. 65 1456.
5. W aterfield C. G. & S taveley L. A. K . 1967 T rans. F araday Soc. 63 2349.
Cited by
8 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献