In which of the following method of purification, metal is converted t – InterviewSolution

1.	In which of the following method of purification, metal is converted to its volatile compound which is decomposed to give pure metal ?
Answer» Heating with stream of carbon monoxide. Heating with iodine. Liquation. DISTILLATION. Solution :Mond.s carbonyl process : `underset("(impure)")(N i) +4CO overset(330 - 350 K)(RARR) N i(CO)_(3)` `N i + (CO) overset(450 - 470 K)(rarr) underset("(pure)")(N i) + 4CO`. Van-Arkel method : `underset("(impure)")(Zr) + 2I_2 to ZrI_4` `ZrI_4 overset(1800K)(rarr) underset("(pure)") (Zr )+ 2I_2`.

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