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Thermokinetics of the Formation Reaction of Zinc Histidine Complex
Author(s) -
Gao ShengLi,
Chen SanPing,
Hu RongZu,
Shi QiZhen
Publication year - 2002
Publication title -
chinese journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 1001-604X
DOI - 10.1002/cjoc.20020200104
Subject(s) - chemistry , enthalpy , thermodynamics , activation energy , zinc , reaction rate constant , atmospheric temperature range , histidine , kinetic energy , standard enthalpy of formation , entropy of activation , kinetics , order of reaction , standard enthalpy change of formation , reaction rate , standard enthalpy of reaction , organic chemistry , catalysis , physics , quantum mechanics , enzyme
The enthalpy change of reaction of zinc chloride with L ‐α‐histidine in the temperature range of 25‐50 °C has been determined by a microcalorimeter. On the basis of experimental and calculated results, three thermodynamics parameters (the activation enthalpy, the activation entropy, the activation free energy), the rate constant and three kinetic parameters (the activation energy, the pre‐exponential constant and the reaction order) of the reaction, and the standard enthalpy of formation of Zn(His) 2+ (aq.) are obtained. The results showed that the title reaction easily took place at the studied temperature.