Determination of the thermodynamic properties of xMgO + (1 x)MnO (s, sln) from a solid-electrolyte galvanic cell in the temperature range 1163 to 1318 K
Data(s) |
01/06/1985
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Resumo |
The thermodynamic activities of MgO in the NaCl-type solid solutions which can exist in xMgO + (1 x)MnO have been determined in the temperature range 1163 to 1318 K from a solid-state galvanic cell incorporating MgF2 as the solid electrolyte. The activities of MnO have been calculated by a graphical Gibbs-Duhem integration method. The activities of both the components exhibit positive deviations from ideality over the entire composition range. The excess molar enthalpies are found to be positive. Further, xMgO + (1 - x)MnO does not conform to regular-solution behaviour. The origin of the excess thermodynamic properties is discussed in relation to the cationic size disparity and the crystal-field effects. |
Formato |
application/pdf |
Identificador |
http://eprints.iisc.ernet.in/20961/1/005.pdf Iyengar, GNK and Abraham, KP and Raghavan, S (1985) Determination of the thermodynamic properties of xMgO + (1 x)MnO (s, sln) from a solid-electrolyte galvanic cell in the temperature range 1163 to 1318 K. In: The Journal of Chemical Thermodynamics, 17 (6). pp. 585-591. |
Publicador |
Elsevier Science |
Relação |
http://dx.doi.org/10.1016/0021-9614(85)90058-8 http://eprints.iisc.ernet.in/20961/ |
Palavras-Chave | #Materials Engineering (formerly Metallurgy) |
Tipo |
Journal Article PeerReviewed |