Mond's process is used for preparing

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Question

(A) $Mond's$ process is a method used for the refining of nickel $(Ni)$.In this process,impure nickel is heated in a stream of carbon monoxide $(CO)$

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$Ni$

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(A) $Mond's$ process is a method used for the refining of nickel $(Ni)$.In this process,impure nickel is heated in a stream of carbon monoxide $(CO)$ to form a volatile complex,nickel tetracarbonyl $([Ni(CO)_4])$.$\underset{	ext{Impure}}{	ext{Ni}} + 4CO \xrightarrow{330-350 	ext{ K}} [Ni(CO)_4]$This complex is then decomposed at a higher temperature to obtain pure nickel.$[Ni(CO)_4] \xrightarrow{450-470 	ext{ K}} \underset{	ext{Pure}}{	ext{Ni}} + 4CO$Thus,the correct option is $A$.

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The formation of $Ni(CO)_4$ and its subsequent decomposition into $Ni$ and $CO$ forms the basis of the Mond process.
$Ni + 4CO$ $\xrightarrow{T_1} Ni(CO)_4$ $\xrightarrow{T_2} Ni + 4CO$
What are the values of $T_1$ and $T_2$?

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