Solutions of electrolytes in liquid ammonia. Part V. Ion-pair formation by ammonium nitrate and ammonium iodide in liquid ammonia at –40 °C
- 1 January 1972
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in J. Chem. Soc., Dalton Trans.
- No. 18,p. 1959-1963
- https://doi.org/10.1039/dt9720001959
Abstract
Ion-pair and triple ion formation constants (KA and KT) have been obtained for NH4NO3 and NH4I in liquid ammonia at –40 °C from previously reported activity coefficient measurements. For NH4NO3, KA= 401 ± 9 dm3 mol–1 and KT= 11·4 ± 0·7 dm3 mol–1, and for NH4I, KA= 476 ± 20 dm3 mol–1 and KT= 6·5 ± 0·8 dm3 mol–1, when the size parameter in the Debye–Hückel equation is set at the Bjerrum critical distance (16·22 × 10–10 m). Revised activity coefficients based on this analysis are presented.Keywords
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