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Citation: CHEN Wen-Sheng, ZHOU Chuan-Pei, LIU Yi, QU Song-Shenga. Calorimetric Determination of Formation Enthalpy of the Complex of Alanine with Samarium Nitrate[J]. Chinese Journal of Applied Chemistry, ;2001, 18(7): 563-565. shu

Calorimetric Determination of Formation Enthalpy of the Complex of Alanine with Samarium Nitrate

1.
a College of Chemistry and Environmental Science, Wuhan University, Wuhan 430072;
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b Department of Chemistry, Hubei Education College, Wuhan;
3.
c Hubei College of Pharmacy, Wuhan

Received Date: 22 September 2000
Available Online: 23 March 2001
Fund Project: 教育部青年骨干教师计划,湖北省教委科研计划资助项目(No.990044) (No.990044)

The dissolution enthalpies of the[Sm(NO₃)₃·6H₂O(s)+4Ala(s)] and Sm(Ala)₄(NO₃)₃·H₂O(s) have been measured at 298.15 K using a homemade isoperibolic calorimeter with hydrochloric acid solution(2 mol/L) as solvent.The standard molar enthalpy of the coodination reaction of alanine with samarium nitrate has been determined via a designed thermochemical cycle, and ΔH_r,m^θ=21.393 kJ/mol was obtained.The standard molar enthalpy of formation of the complex Sm(Ala)₄-(NO₃)₃·H₂O has been calculated to be ΔH_f,m^θ [Sm(Ala)₄(NO₃)₃·H₂O,s,298.15 K]=-3 865.2 kJ/mol.
- alanine,
- samarium nitrate,
- coordination reaction,
- formation enthalpy
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