Thermochemical Study on the Reaction of Lanthanum Nitrate with Alanine

Abstract

Abstract: The standard molar reaction enthalpy of the solid-solid coordination reaction, La(NO₃)₃. 6H₂O (s) + 4Ala(s) (Ala is Alanine) =La(NO₃)₃· (Ala)₄·H₂O(s) + 5H₂O(1), has been studied by the classical solution calorimetry. The molar dissolution enthalpies of the reactants and the products in₂ mol/L HCl of this solid-solid coordination reaction have been measured by using an isoperibol calorimeter. From the results and other auxiliary quantities, the standard molar formation enthalpies of [La(NO₃ )₃· (Ala)₄· H₂O, s, 298.15 K] have been determined to be[La(NO₃)₃·(Ala)₄· H₂O, s, 298. 15 K]= -3864.247 kJ/mol.

Key words: Lanthanum nitrate, Alanine, Thermochemistry, Standard molar formation enthalpy

CLC Number:

O642.3

TrendMD:

LI Qiang-Guo, QU Song-Sheng, ZHOU Chuang-Pei, LIU Yi. Thermochemical Study on the Reaction of Lanthanum Nitrate with Alanine[J]. Chem. J. Chinese Universities, 2000, 21(5): 791.

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Thermochemical Study on the Reaction of Lanthanum Nitrate with Alanine

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