CBSE Class 11-science Answered
what is van Arkel method?
Asked by | 22 Mar, 2008, 08:21: PM
Expert Answer
Van Arkel method : In this process metals are converted into other metal-compounds like metal-iodides. Metal-iodides are decomposed easily and highly pure metals are then obtained. For example in a pure block of Ti, Fe can be an impurity. This block is heated in iodine at a temperature of 250°C. Ti converts into TiI4 but the impurities do not. TiI4 is passed over hot tungsten filament so that TiI4 is decomposed and ultra pure Ti is obtained.
Answered by | 08 May, 2008, 09:49: AM
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