Alberty 1980 Physical chemistry

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Alberty RA, Daniels F (1980) Physical chemistry. SI version. 5th ed, John Wiley & Sons, New York:692 pp.


Alberty RA, Daniels F (1980) John Wiley & Sons, New York

Abstract: This SI version of the fifth edition has bee prepared for those who want to use the joule in thermodynamic calculations and SI units more completely in other sections. The calorie has been replaced by the joule (1 cal = 4.184 J), the torr has been replaced by the pascal (1 torr = 133.322 Pa), and the gauss has been replaced by the tesla (1 G = 10-4 T). In calculations using other quantities in SI units, pressures are expressed in pascals. This has real advantages in calculations because the SI system is coherent; that is, no additional numerical factors appear in equations relating different physical quantities.

Thermodynamics deals with relationships between properties of systems at equilibrium and with differences in properties between various equilibrium states. It has nothing to do with time. Even so, it is one of the most powerful tools of physical chemistry.


"Unfortunately, using different symbols for extensive thermodynamic properties and their molar counterparts greatly increases the number of symbols and equations. .. Therefore, we will use a single set of symbols for thermodynamic quantities and let them represent the intensive, or molar, quantities" (p. 4).
  • This is a source of confusion - see: Force