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Van Arkel - De Boer Method

Which method ...

Question

Which method is used for refining Zr and Ti? Explain with equation.

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Solution

Zr and Ti are refined by van Arkel method. It involves 2 steps
(a) Formation of iodide e.g., zirconium
$Z r + 2 l_{2} ⟶ Z r I_{4}$
(b) Decomposition of iodide
$Z r I_{4} 1800 k - -- \to Z r P u r e + 2 I_{2}$

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