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Explain the role of : Carbon monoxide in the purification of nickel. |
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Answer» SOLUTION :Carbon monoxide reacts with nickel to form nickel tetracarbonyl. `{:(Ni+4CO overset(330-350K)(to)Ni (CO)_(4)),("Nickel tetracarbonyl "):}` The IMPURITIES remain unreacted. `Ni(CO)_(4)` on heating to a higher temperature DECOMPOSES to GIVE pure nickel. `Ni(CO)_(4) overset(450-470K)(to)Ni+ 4CO`. |
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