Solution containing the
anion to which the
reference electrode of the
operational pH cell is reversible, e.g. chloride for silver-silver chloride electrode. In the absence
of a
bridge solution, a high concentration of filling solution comprising cations and anions of almost
equal
mobility is employed as a means of maintaining the
liquid junction potential small and approximately constant on substitution of
test solution for
standard solution(s).
Source:
PAC, 1985, 57, 531
(Definition of pH scales, standard reference values, measurement of pH and related
terminology (Recommendations 1984))
on page 541
Cite as:
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.
