Thermodynamic Study of Chelation of Rare Earth(III) Ions with 2,3-Dihydroxynaphthalene (DON)
| Main Authors: | B. C. BHUYAN, S. N. DUBEY |
|---|---|
| Format: | Article Journal |
| Bahasa: | eng |
| Terbitan: |
, 1980
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| Subjects: | |
| Online Access: |
https://zenodo.org/record/6372347 |
Daftar Isi:
- Department of Chemistry, Kurukshetra University, Kurukshetra-132 119 (Haryana) Manuscript received 12 December 1979, revised 29 July 1980, accepted 7 August 1980 The chelation of 2, 3-dihydroxynaphthalene with trivalent La, Pr, Nd, Sm, Gd, Tb, Dy, Ho and Y have been studied pH-metrically at 30°±0.5° in aqueous ethanol (10% v/v) at different ionic concentrations (0.05, 0.1, 0.15 and 0.2M KNO3). Formation of 1 : 1 chelates are indicated. The order of stability is found to be Ho > Dy > Tb Y > Gd > Sm > Nd) Pr > La The thermodynamic stability constants and free energies of chelation have been reported.