List of thermodynamic properties

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Thermodynamic properties and their characteristics
Property Symbol Units Extensive? Intensive? Conjugate Potential? State
qty.
?
Process
qty.
?
Activity a  – Green tickY Green tickY
Altitude m Green tickY Green tickY
Chemical potential \mu_i kJ/mol Green tickY Particle
number N_i
Green tickY
Compressibility (adiabatic) \beta_S, \kappa Pa−1 Green tickY Green tickY
Compressibility (isothermal) \beta_T, \kappa Pa−1 Green tickY Green tickY
Cryoscopic constant[1] K_f K·kg/mol
Density \rho kg/m3 Green tickY Green tickY
Ebullioscopic constant K_b
Enthalpy H J Green tickY Green tickY Green tickY
   Specific enthalpy h J/kg Green tickY Green tickY
Entropy S J/K Green tickY Temperature T Green tickY (entropic) Green tickY
   ↳ Specific entropy s J/(kg K) Green tickY Green tickY
Fugacity f N/m² Green tickY Green tickY
Gas constant R, \bar R J/K Green tickY
   Specific gas constant
      (for a particular substance)
R_S J/(kg K) Green tickY
Gibbs free energy G J Green tickY Green tickY Green tickY
   ↳ Specific Gibbs free entropy g J/(kg K) Green tickY Green tickY
Gibbs free entropy \Xi J/K Green tickY Green tickY (entropic) Green tickY
Grand / Landau potential \Omega J Green tickY Green tickY Green tickY
Heat Q J Green tickY Green tickY
Heat capacity (constant pressure) C_p J/K Green tickY Green tickY
   Specific heat capacity
      (constant pressure)
c_p J/(kg·K) Green tickY Green tickY
Heat capacity (constant volume) C_v J/K Green tickY Green tickY
   Specific heat capacity
      (constant volume)
c_v J/(kg·K) Green tickY Green tickY
Helmholtz free energy A, F J Green tickY Green tickY Green tickY
Helmholtz free entropy \Phi J/K Green tickY Green tickY (entropic) Green tickY
Internal energy U J Green tickY Green tickY Green tickY
   Specific internal energy u J/kg Green tickY Green tickY
Internal pressure  \pi _T Pa Green tickY Green tickY
Mass m kg Green tickY
Particle number N_i  – Green tickY Chemical
potential \mu_i
Pressure p Pa Green tickY Volume V Green tickY
Temperature T K Green tickY Entropy S Green tickY
Thermal conductivity k W/(m·K) Green tickY Green tickY
Thermal diffusivity \alpha m²/s Green tickY Green tickY
Thermal expansion (linear) \alpha_L K−1 Green tickY Green tickY
Thermal expansion (area) \alpha_A K−1 Green tickY Green tickY
Thermal expansion (volumetric) \alpha_V K−1 Green tickY Green tickY
Vapor quality[2] \chi  – Green tickY Green tickY
Volume V m3 Green tickY Pressure P Green tickY
   Specific volume v m3/kg Green tickY Green tickY
Work W J Green tickY Green tickY

Specific properties are expressed on a per mass basis; in some circumstances other dimensions could be used, such as per-mole.

Regarding Work and Heat:

Note that work and heat above are listed as process quantities: They are, in fact, not thermodynamic properties, but flows of energy across a system boundary. Systems do not contain work, but can perform work, and likewise, in formal thermodynamics, systems do not contain heat, but can transfer heat. Informally, however, a difference in the energy of a system that occurs solely because of a difference in its temperature is commonly called heat, and the energy that flows across a boundary as a result of a temperature difference is, in fact, heat in the technical sense.

See also[edit]

References[edit]

  1. ^ Aylward, Gordon; Findlay, Tristan (2002), SI Chemical Data 5th ed. (5 ed.), Sweden: John Wiley & Sons, p. 202, ISBN 0-470-80044-5 
  2. ^ Cengel, Yunus A.; Boles, Michael A. (2002). Thermodynamics: an engineering approach. Boston: McGraw-Hill. p. 79. ISBN 0-07-121688-X.