A term, indicated by a superscript ', which means that a process is not well known
or that its value carries uncertainties which are not known, e.g.
is the apparent standard Gibbs energy change. In the context of partial molar quantities
the word is used in a different sense; as a symbol for 'apparent
' in this connection the use of subscript
, as in
, is recommended. Other notations employed for this property include
PAC, 1986, 58, 1405
(Recommendations for the presentation of thermodynamic and related data in biology
on page 1408
IUPAC. Compendium of Chemical Terminology, 2nd ed. (the "Gold Book"). Compiled by
A. D. McNaught and A. Wilkinson. Blackwell Scientific Publications, Oxford (1997).
XML on-line corrected version: http://goldbook.iupac.org (2006-) created by M. Nic,
J. Jirat, B. Kosata; updates compiled by A. Jenkins. ISBN 0-9678550-9-8. https://doi.org/10.1351/goldbook