A THERMODYNAMIC STUDY OF THE SYSTEM AMMONIUM FLUORIDE-WATER. I. THE HEAT CAPACITY AND THERMODYNAMIC FUNCTIONS OF AMMONIUM FLUORIDE MONOHYDRATE

1961 ◽  
Vol 65 (3) ◽  
pp. 403-408 ◽  
Author(s):  
Leonard C. Labowitz ◽  
Edgar F. Westrum
Keyword(s):  
Heat Capacity ◽  
Thermodynamic Functions ◽  
Ammonium Fluoride ◽  
Thermodynamic Study

The thermodynamics of the divalent metal fluorides. I. Heat capacity of lead tetrafluorostannate, PbSnF4, from 10.3 to 352 K

1988 ◽  
Vol 66 (4) ◽  
pp. 549-552 ◽  
Author(s):  
Jane E. Callanan ◽  
Ron D. Weir ◽  
Edgar F. Westrum Jr.
Keyword(s):  
Phase Transition ◽  
Heat Capacity ◽  
Thermodynamic Functions ◽  
Adiabatic Calorimetry ◽  
Temperature Limit ◽  
Divalent Metal ◽  
Ion Conductor ◽  
Metal Fluorides ◽  
Fast Ion Conductor ◽  
Fast Ion

We have measured the heat capacity of the fast ion conductor PbSnF4 at 10.3 < T < 352 K by adiabatic calorimetry. Our results show anomalous values in the Cp,m in the region 300 < T < 352 K. These are associated with the α–β crystallographic transition reported at 353 K. Because the upper temperature limit of our cryostat is around 354 K, it was impossible to follow the phase transition to completion. A more subtle anomaly in the Cp,m was detected between 130 and 160 K. Standard molar thermodynamic functions are presented at selected temperatures from 5 to 350 K.

Heat capacity and thermodynamic functions of sphalerite: Implication to sulfide solid-state galvanic cell measurements

2016 ◽  
Vol 641 ◽  
pp. 14-23 ◽  
Author(s):  
V.M. Gurevich ◽  
V.O. Osadchii ◽  
V.B. Polyakov ◽  
K.S. Gavrichev ◽  
E.G. Osadchii
Keyword(s):  
Heat Capacity ◽  
Solid State ◽  
Thermodynamic Functions ◽  
Galvanic Cell

Heat capacity measurements on Sn2S3 and the thermodynamic functions of the tin sulfides

1980 ◽  
Vol 35 (2) ◽  
pp. 187-196 ◽  
Author(s):  
Heribert Wiedemeier ◽  
Frank Csillag ◽  
Umesh Gaur ◽  
Bernhard Wunderlich
Keyword(s):  
Heat Capacity ◽  
Thermodynamic Functions ◽  
Tin Sulfides ◽  
Heat Capacity Measurements

scholarly journals Temperature dependence of the specific heat and thermodynamic functions AК1М2 alloy, doped strontium

2019 ◽  
Vol 21 (1) ◽  
pp. 35-42 ◽  
Author(s):  
I. N. Ganiev ◽  
S. E. Otajonov ◽  
N. F. Ibrohimov ◽  
M. Mahmudov
Keyword(s):  
Heat Capacity ◽  
Gibbs Energy ◽  
Specific Heat ◽  
Temperature Dependence ◽  
Specific Heat Capacity ◽  
Thermodynamic Functions ◽  
Inverse Relationship ◽  
Alloying Element ◽  
Enthalpy And Entropy ◽  
Increasing Temperature

In the heat «cooling» investigated the temperature dependence of the specific heat capacity and thermodynamic functions doped strontium alloy AK1М2 in the range 298,15—900 K. Mathematical models are obtained that describe the change in these properties of alloys in the temperature range 298.15—900 K, as well as on the concentration of the doping component. It was found that with increasing temperature, specific heat capacity, enthalpy and entropy alloys increase, and the concentration up to 0.5 wt.% of the alloying element decreases. Gibbs energy values have an inverse relationship, i.e., temperature — decreases the content of alloying component — is up to 0.5 wt.% growing.

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