In the purification of impure nickel by Mond' | vedclass

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Question

(B) In Mond's process,impure nickel is treated with carbon monoxide to form a volatile complex,nickel tetracarbonyl,which is then thermally decomposed

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Vapour phase thermal decomposition

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(B) In Mond's process,impure nickel is treated with carbon monoxide to form a volatile complex,nickel tetracarbonyl,which is then thermally decomposed to obtain pure nickel.$Ni_{(s)} + 4CO_{(g)} \xrightarrow{50^{\circ}C - 60^{\circ}C} [Ni(CO)_4]_{(g)}$$[Ni(CO)_4]_{(g)} \xrightarrow{200^{\circ}C - 230^{\circ}C} Ni_{(s)} + 4CO_{(g)}$This method is a type of vapour phase refining.

In the purification of impure nickel by Mond's process,metal is purified by

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