## standard thermodynamic quantities

https://doi.org/10.1351/goldbook.S05927
Values of thermodynamic functions in the @S05925@ characterized by a @S05921@, molality or @A00295@, but not by temperature. Standard quantities are denoted by adding the superscript $$^{\text{⦵}}$$ or $$^{\unicode{x26ac}}$$ to the symbol of the quantity.
Source:
Green Book, 2nd ed., p. 53 [Terms] [Book]