Write the chemical equations for the Mond pro | vedclass

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(A) The Mond process is a technique used to extract and purify nickel. In this process,impure nickel is heated in a stream of carbon monoxide $(CO)$ a

Vedclass · Accepted Answer

$Ni + 4CO \xrightarrow{330-350 \ K} Ni(CO)_4$ and $Ni(CO)_4 \xrightarrow{450-470 \ K} Ni + 4CO$

Vedclass · Answer

(A) The Mond process is a technique used to extract and purify nickel. In this process,impure nickel is heated in a stream of carbon monoxide $(CO)$ at $330-350 \ K$ to form a volatile nickel tetracarbonyl complex: $Ni(s) + 4CO(g) \xrightarrow{330-350 \ K} Ni(CO)_4(g)$. The volatile nickel tetracarbonyl is then subjected to higher temperatures $(450-470 \ K)$,causing it to decompose into pure nickel and carbon monoxide: $Ni(CO)_4(g) \xrightarrow{450-470 \ K} Ni(s) + 4CO(g)$.

Write the chemical equations for the Mond process used for the refining of nickel.

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