The cyanide process is used in the extraction | vedclass

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(C) The cyanide process (also known as the Mac-Arthur Forest process) is used in the extraction of both $Au$ (Gold) and $Ag$ (Silver). In this process

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Both $Au$ and $Ag$

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(C) The cyanide process (also known as the Mac-Arthur Forest process) is used in the extraction of both $Au$ (Gold) and $Ag$ (Silver). In this process,the metal is leached with a dilute solution of $NaCN$ or $KCN$ in the presence of air (as a source of $O_2$),which acts as an oxidizing agent. The metals form soluble complex salts with the $CN^-$ ion,such as $[Au(CN)_2]^-$ and $[Ag(CN)_2]^-$,due to the presence of a lone pair of electrons on the nitrogen atom of the cyanide ion.

The cyanide process is used in the extraction of:

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