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Chimica nella Scuola

Metodologie didattiche per l'Università

No. 3 (2022): Metodologie didattiche

Il lavoro di espansione in termodinamica

Submitted
5 July 2022
Published
06-07-2022

Abstract

In physical chemistry courses, the teaching of the expansion work is often conducted with reference to the external pressure. This practice, consistent with the equations of the dynamics of the material point only in special cases and for finite transformations, can be avoided without mathematical burden and by highlighting the difference between system-based work and surroundings-based work, which has an important conceptual and practical role.

References

  1. K. Schmidt-Rohr, Expansion Work without the external pressure and thermodynamics in terms of quasistatic irreversible processes, J. Chem. Educ., 2014, 91, 402 – 409; doi: 10.1021/ed3008704.
  2. D. Kivelson, I. Oppenheim, Work in irreversible expansions. J. Chem. Educ. 1966, 43, 233 – 235; doi: 10.1021/ed043p233.
  3. E. A. Gislason; N. C. Craig, Cementing the foundations of thermodynamics: comparison of system-based and surrounding based definitions of work and heat. J. Chem. Thermodynamics 2005, 37, 954 – 966; doi: 10.1016/j.jct.2004.12.012.
  4. R. P. Bauman; H. L. Cockerham, Pressure of an ideal gas on a moving piston. Am. J. Phys. 1969, 37, 675 – 679; doi: 10.1119/1.1975769.