what is van Arkel method?

Asked by  | 22nd 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  | 8th May, 2008, 09:49: AM

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