The diffusion coefficients of the iodide ion in 0·01M-, 0·5M- and 2·0M-solutions of potassium iodide containing dissolved iodine have been determined using radioactively labelled iodide ion.
The only polyiodide ion indicated in the 0·01M- and 0·5M-solutions is the tri-iodide ion which is stable up to 40°. There is only slight evidence for the existence of higher polyiodides in 2·0M-solution.
K. G. Darrall and G. Oldham, J. Chem. Soc. A, 1968, 2584 DOI: 10.1039/J19680002584
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