In the extraction of nickel by the Mond proce | vedclass

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Question

(B) The Mond process is used for the purification of nickel. In this process,impure nickel is heated in a stream of carbon monoxide $(CO)$ at $330-350

Vedclass · Accepted Answer

thermal decomposition

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(B) The Mond process is used for the purification of nickel. In this process,impure nickel is heated in a stream of carbon monoxide $(CO)$ at $330-350 \ K$ to form a volatile complex,nickel tetracarbonyl,$[Ni(CO)_4]$. $Ni(s) + 4CO(g) \xrightarrow{330-350 \ K} [Ni(CO)_4](g)$ This complex is then subjected to higher temperatures $(450-470 \ K)$,which causes thermal decomposition to yield pure nickel metal. $[Ni(CO)_4](g) \xrightarrow{450-470 \ K} Ni(s) + 4CO(g)$ Thus,the metal is obtained by thermal decomposition.

In the extraction of nickel by the Mond process,the metal is obtained by:

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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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