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apparent (quantity)

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. Δ G o ′ 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 φ, as in Y φ, is recommended. Other notations employed for this property include φ X and φ X.
Source:
PAC, 1986, 58, 1405 (Recommendations for the presentation of thermodynamic and related data in biology (Recommendations 1985)) on page 1408
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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. doi:10.1351/goldbook.
Last update: 2014-02-24; version: 2.3.3.
DOI of this term: doi:10.1351/goldbook.A00418.
Original PDF version: http://www.iupac.org/goldbook/A00418.pdf. The PDF version is out of date and is provided for reference purposes only. For some entries, the PDF version may be unavailable.
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