OLD AND NEW APPROXIMATE FORMULAS FOR ELEMENTARY PH CALCULATIONS, AND THEIR LIMITS OF APPLICABILITY

Authors
CARDINALI ME GIOMINI C MARROSU G
Citation
Me. Cardinali et al., OLD AND NEW APPROXIMATE FORMULAS FOR ELEMENTARY PH CALCULATIONS, AND THEIR LIMITS OF APPLICABILITY, Bulletin des Societes chimiques belges, 104(1), 1995, pp. 7-9
Citations number
8
Categorie Soggetti
Chemistry
Journal title
Bulletin des Societes chimiques belges → ACNP
ISSN journal
00379646
Volume
104
Issue
1
Year of publication
1995
Pages
7 - 9
Database
ISI
SICI code
0037-9646(1995)104:1<7:OANAFF>2.0.ZU;2-0
Abstract
The paper discusses the limits of applicability of the most common app roximate formulae employed for calculating the [H3O+] value of aqueous solutions containing a weak electrolyte whose acid-base behaviour is completely described by a single ionization process. These limits are so fixed as to avoid that absurd results are obtained. In addition, a new simple formula is proposed, that overcomes some drawbacks of the t raditional formulae, and an unknown, singular feature of a well-known formula is pointed out.