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IJCT Vol.11 [2004] >
IJCT Vol.11(1) [January 2004] >
| Title: | Solvation behaviour of chloramine-T in solvent mixtures at different temperatures |
| Authors: | Bhat, J Ishwara
Sabitha, N V |
| Issue Date: | Jan-2004 |
| Publisher: | CSIR |
| IPC Code: | G01N27/00 |
| Abstract: | The solvation behaviour of chloramine-T in water
and different compositions of water + co-solvent (dioxan, propan-2-ol and
propan-1-ol) at 278, 288, 298 and 318K have been studied on the basis of
conductivity principle. Experimentally obtained conductivity data are analysed
by Kraus-Bray and Shedlovsky conductivity models to obtain limiting molar
conductance, dissociation and association constants. Limiting molar conductance
decreases with the increasing amount of co-solvent in water at all
temperatures. Preferential solvation of cation by the co-solvent is identified.
Thermodynamics of association in case of water + dioxan and dissociation in
case of water + propan-2-ol and water + propan-1-ol are computed. Exothermic
behaviour of solvation is observed. Ion pair formation constant (KP) and triple ion formation constant (KT) are
determined from Fuoss-Accascina equation. KP
is found to be higher than KT
in all the cases, indicating the higher magnitude of association involved in
the system. Solvation number is also calculated by a new model and is found to
be fractional. |
| Page(s): | 17-22 |
| ISSN: | 0975-0991 (Online); 0971-457X (Print) |
| Source: | IJCT Vol.11(1) [January 2004]
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