THERMODYNAMICS OF AMMONIUM HALOGENATED OSMATES .1. HEAT-CAPACITY AND THERMODYNAMIC PROPERTIES OF (NH4)(2)OSCL6 AT TEMPERATURES FROM 6 K TO 325 K

被引：4

作者：

CALLANAN, JE

WEIR, RD

WESTRUM, EF

机构：

[1] ROYAL MIL COLL CANADA,DEPT CHEM & CHEM ENGN,KINGSTON,ON K7K 5L0,CANADA

[2] UNIV MICHIGAN,DEPT CHEM,ANN ARBOR,MI 48109

来源：

JOURNAL OF CHEMICAL THERMODYNAMICS | 1995年 / 27卷 / 04期

关键词：

D O I：

10.1006/jcht.1995.0040

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The heat capacity of ammonium hexachloroosmate (NH4)(2)OsCl6 was measured at temperatures from T = 6 K to 325 K by adiabatic calorimetry. Two small anomalous regions were observed in the heat-capacity against temperature plot. The lower one, from 80 less than or equal to (T/K) less than or equal to 140, had an excess molar enthalpy of (21.19 +/- 0.04).R.K and an excess molar entropy of (0.198 +/- 0.006).R. The upper one, from 200 less than or equal to (T/K) less than or equal to 300, had an excess molar enthalpy of (19.51 +/- 0.04).R.K and an excess molar entropy of (0.076 +/- 0.006).R. Smoothed values of the standard molar thermodynamic quantities for pure (NH4)(2)OsCl6 are tabulated up to T = 350 K.

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页码：405 / 414

页数：10

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