Which method of purification is represented by the following equation

1.	Which method of purification is represented by the following equation Ti(s)
Answer» ZONE refining Cupellation Poling Van -Arkel. Solution :Van-Arkel method of purification of metals is based on the thermal decomposition of a VOLATILE iodide formed first by direct COMBINATION of metal to be PURIFIED and iodine. Metal formed is in its purest FORM. Metals such as titanium and zirconium are purified by this method.

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