EQUILIBRIA IN MODERATELY CONCENTRATED AQUEOUS HYDROGEN-FLUORIDE SOLUTIONS

被引：33

作者：

BRADDY, R ^{[1
]}

MCTIGUE, PT ^{[1
]}

VERITY, B ^{[1
]}

机构：

[1] UNIV MELBOURNE,SCH CHEM,PARKVILLE,VIC 3052,AUSTRALIA

来源：

JOURNAL OF FLUORINE CHEMISTRY | 1994年 / 66卷 / 01期

关键词：

D O I：

10.1016/0022-1139(93)02895-L

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Hydrogen and fluoride ion molalities have been estimated potentiometrically in HF/H2O mixtures up to 10 mol% HF (c. 6 mol kg-1 HF) at 298 K using the galvanic cells: Ag/AgCl/KCl(m1), HF(m2)\PbClF/Pb (two-phase amalgam) (1) Pt/H-2\KCl(m1), HF(m2)\AgCl/Ag (2) The data show progressive solvation of F- by HF to form first HF2- and then H2F3-; this association is directly responsible for the rapid rise in acidity as the analytical HF concentration rises above 1 molal. No evidence was found for any significant further association of HF with F- at molalities below 6.

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页码：63 / 67

页数：5

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