Energetics of formation of I2 ? and (CNS)2 ? in aqueous solution
- 1 January 1969
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in J. Chem. Soc. A
- p. 2240-2241
- https://doi.org/10.1039/j19690002240
Abstract
The ΔH of formation of I2 – and (CNS)2 – in aqueous solution have been obtained from measurements of the equilibrium constants of the reactions I + I–→ I2 – and CNS + CNS–→(CNS)2 –. They are 5·6 and 6·4 kcal. (g. ion)–1 respectively. From the former ΔHf°(I2 –)aq and ΔGf°(I2 –)aq have been calculated to be + 2·5 and + 1·0 kcal. respectively. The electron affinity of I2 in solution and in the gas phase are estimated to be 4·6 and 2·4 ± 0·5 eV.Keywords
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