The dielectric properties of aqueous solutions of ammonium halides

Citation
Aa. Potapov et Iy. Parkhomenko, The dielectric properties of aqueous solutions of ammonium halides, RUSS J PH C, 73(7), 1999, pp. 1083-1086
Citations number
12
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY
ISSN journal
00360244 → ACNP
Volume
73
Issue
7
Year of publication
1999
Pages
1083 - 1086
Database
ISI
SICI code
0036-0244(199907)73:7<1083:TDPOAS>2.0.ZU;2-F
Abstract
The concentration dependences of the real epsilon' and imaginary epsilon" p ermittivity components were measured at a 9.1 GHz frequency for aqueous sol utions of ammonium halides in a wide concentration range (from infinite dil ution to solution saturation). The epsilon'(c) and epsilon"(c) dependences for ammonium fluoride were unique in the series of NH(4)Hal solutions becau se of nondestructive embedding of the NH4+ and F- ions into the framework o f water. In the region of infinite dilution, the mechanism of the destructi ve action of anions on the framework of water was found to be common to Cl- , Br-, and I-. The behavior of the epsilon'(c) and epsilon"(c) dependences of aqueous solutions of ammonium halides lends support to the concept of th e proton-activation nature of dielectric polarization, which is characteris tic of systems with H-bonds.