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  Home > JCE Print > Journal of Chemical Education > Issues > 2005  > June  >
Research: Science and Education
Thermodynamics of the Relationship between Lattice Energy and Lattice Enthalpy
H. Donald B. Jenkins
Department of Chemistry, University of Warwick, Coventry, West Midlands CV4 7AL, United Kingdom

Cover
June 2005
Vol. 82 No. 6
p. 950

Abstract
Incorporation of lattice potential energy, UPOT, within a Born–Fajans–Haber thermochemical cycle based on enthalpy changes necessitates correction of the energy of the lattice to an enthalpy term, ΔHL. For a lattice containing si ions of type i in the formula unit, the lattice enthalpy is given by ΔHL = UPOT + ∑si[(ci/2) - 2]RT where R is the gas constant (= 8.314 J K-1 mol-1), T is the absolute temperature, and ci is defined according as to whether the ion i is monatomic (ci = 3), linear polyatomic (ci= 5), or polyatomic (ci= 6), respectively.
More Information
*  Citation
Jenkins, H. Donald B. J. Chem. Educ. 2005 82 950.
*  Keywords
Curriculum; Physical Chemistry; Second-Year Undergraduate; Solid State Chemistry; Solids; Textbooks / Reference Books; Thermodynamics; Upper-Division Undergraduate
*  History
Created:
Last Updated:
April 27, 2005
May 11, 2005
  Home > JCE Print > Journal of Chemical Education > Issues > 2005 > June > Page 950


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