Raj, Markondeya P (1995) A critical assessment of the standard molar gibbs free energy of formation of NiWO4. In: Bulletin of Materials Science, 18 (5). pp. 623-630.
A_critical.pdf - Published Version
Three independent studies have been reported on the free energy of formation of NiWO4. Results of these measurements are analyzed by the ï¿½third-lawï¿½ method, using thermal functions for NiWO4 derived from both low and high temperature heat capacity measurements. Values for the standard molar enthalpy of formation of NiWO4 at 298·15 K obtained from ï¿½third-lawï¿½ analysis are compared with direct calorimetric determinations. Only one set of free energy measurements is found to be compatible with calorimetric enthalpies of formation. The selected value for ?f H m 0 (NiWO4, cr, 298Â·15 K) is the average of the three calorimetric measurements, using both high temperature solution and combustion techniques, and the compatible free energy determination. A new set of evaluated data for NiWO4 is presented.
|Item Type:||Editorials/Short Communications|
|Additional Information:||Copyright of this article belongs to Indian Academy of Sciences.|
|Keywords:||"Third-law" analysis;Gibbs energy function; e.m.f, measurements;enthalpy of formation;heat capacity;entropy; phase relations.|
|Department/Centre:||Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)|
|Date Deposited:||26 Apr 2011 06:46|
|Last Modified:||26 Apr 2011 06:46|
Actions (login required)