standard thermodynamic quantities

https://doi.org/10.1351/goldbook.S05927
Values of thermodynamic functions in the standard state characterized by a standard pressure, molality or amount concentration, but not by temperature. Standard quantities are denoted by adding the superscript ⦵ or ∘ to the symbol of the quantity.
Source:
Green Book, 2nd ed., p. 53 [Terms] [Book]
See also:
PAC, 1994, 66, 533. (Standard quantities in chemical thermodynamics. Fugacities, activities and equilibrium constants for pure and mixed phases (IUPAC Recommendations 1994)) on page 536 [Terms] [Paper]
Citation: 'standard thermodynamic quantities' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. https://doi.org/10.1351/goldbook.S05927 RIS BibTex EndNote
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