Abstract
The determination of the solubilities of KIO 3 and NaIO 3 in saturated NaCl solution at 0, 10, 20 °C were carried out in two ternary systems KIO 3–NaCl–H 2O and NaIO 3–NaCl–H 2O. Saturated KIO 3 and NaIO 3 solutions were prepared and NaCl was added to saturation. Iodate concentrations were measured using standardized sodium thiosulphate. The solubilities of KIO 3 and NaIO 3 are temperature sensitive over the range 0 °C to 20 °C (unlike NaCl). Iodate solubility was much lower in saturated NaCl than that of deionised water. In saturated NaCl at 10 °C, for example, NaIO 3 was 19% and KIO 3 was 15% the solubility of that found in deionised water at the same temperature.
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