Which of the following metals is extracted by | vedclass

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(A) The cyanide process,also known as the MacArthur-Forrest process,is primarily used for the extraction of precious metals like gold $(Au)$ and silve

Vedclass · Accepted Answer

$Ag$

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(A) The cyanide process,also known as the MacArthur-Forrest process,is primarily used for the extraction of precious metals like gold $(Au)$ and silver $(Ag)$ from their ores.In this process,the crushed ore is treated with a dilute solution of sodium cyanide $(NaCN)$ in the presence of air (as a source of oxygen).For silver $(Ag)$,the chemical reaction is: $4Ag(s) + 8CN^-(aq) + 2H_2O(aq) + O_2(g) \rightarrow 4[Ag(CN)_2]^-(aq) + 4OH^-(aq)$.Thus,$Ag$ is extracted using the cyanide process.

Which of the following metals is extracted by the cyanide process (leaching)?

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