
TY  - JOUR
A1  - Mctigue, P 
A1  - Odonnell, TA 
A1  - Verity, B 
T1  - The Determination of Fluoride-Ion Activities in Moderately Concentrated Aqueous Hydrogen-Fluoride
JF  - Australian Journal of Chemistry
JO  - Aust. J. Chem.
Y1  - 1985
VL  - 38
IS  - 12
SP  - 1797
EP  - 1807
KW  - 
UR  - https://doi.org/10.1071/CH9851797 
N2  - A lead-lead chlorofluoride electrode has been used to determine fluoride ion activities, aF-, in 0-6 M aqueous HF. Our data show that aF- increases, passes through a maximum and then decreases with increasing HF concentration. The conductivities of concentrated HF- water mixtures have also been measured. Both the conductometric and potentiometric data are used in the development of a quantitative model of the equilibria existing between fluoride ions and HF molecules in the solutions studied. The data support the view that the ions (HF)2F-, (HF)3F- and (HF)4F- are important species in moderately concentrated aqueous HF. 
ER  -

