CRCU

Chemical Research in Chinese Universities ›› 2000, Vol. 16 ›› Issue (4): 347-350.

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A Thermochemical Study of the Reaction of Lanthanum Nitrate with Alanine

LI Qiang-guo   

  1. Department of Chemistry, Chenzhou Teacher' s College, Hunan 423000, P. R. China
  • Received:1999-11-12 Online:2000-12-24 Published:2011-09-09
  • Supported by:

    Financial assist subject of the Chenzhou Teacher's College Profesor Project.

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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) was studied by using classical solution calorimetry.The molar dissolution enthalpies of the reactants and the product of the solid-solid coordination reaction in2 mol/L HCl were measured by using an isoperibol calorimeter.From the results and other auxiliary quantities, the standard molar formation enthalpy of [La (NO3)3·(Ala)4·H2O, s, 298.15 K] has been determined to be [La(NO3)3·(Ala)4·H2O, s, 298.15 K]=-3864.248 kJ/mol.

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