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Describe the role of Iodine in the refining of zirconium. Write chemical equations for the involved reactions. |
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Answer» Solution :Pure ziroconium can be obtained from IMPURE Zr by van Arkel method. Crude Zr is heatedin an evacuated vessal with iodine. The metal iodide being covalent volatilises. `Zr +2I_(2) to ZrI_(4)` The metal iodide is heated on a TUNGSTEN filament, electrically heated to about 1800 K. Pure metal is DEPOSITED on the filament. `ZrI_(4) to Zr +2I_(2)`. |
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