Abstract
To avoid the influence due to dissolved oxygen, tin (II) ion was treated with iodine-methanol and the iodide ion produced was titrated with potassium iodate. The 2.0 cm3 of tin (II) solution involved concentrated hydrochloric acid was cooled to ca. 10°C and then was added an excess of 10 % (w/v) iodine-methanol. The mixture was immediately diluted to ca. 50 cm3 with distilled water and then was titrated potentiometrically with 0.05 mol dm-3 potassium iodate. Blank test was carried out similar fashion. All procedure were performed in air. Amounts of tin (II) { (50150) mg} was determined simply and the analytical results were in good agreement with those obtained by the iodometric method (oxygen-free).
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