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Describea methodfor refining nickel. |
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Answer» Solution :The impure nickel is HEATED in a stream of carbon monoxide at AROUND 350 K.The nickel reacts with the CO to form a highly volatile nickel .The SOLID impurities are left behind. `Ni(s)+4CO(G)TONI(CO)_(4)(g)` On heating the nickel tetracarbonyl around 460K,the complex decomposes to give pure metal. `Ni(CO)_(4)(g)toNi(S)+4CO(g)` |
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