Question

Extraction of gold and silver involves leaching the metal with CN- ion.The metal is recovered by which method??
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Answer 1

Leaching -

In this process we use suitable agent which react with ore to form water soluble complex while impurities are insoluble

- wherein

Ag2S +NaCN \overset{O2}{\rightarrow} Na [Ag (CN)2]

Na [Ag (CN)2] + Zn{\rightarrow} Na2 [Zn(CN)4] +Ag {\downarrow}

In the process of leaching, we use an angent which reacts with are to form water soluble complex while impurities are insoluble.

Ag_{2}S+NaCN \xrightarrow[]{O_{2}}Na[Ag(CN)_{2}]

Na[Ag(CN)_{2}]+Zn\rightarrow Na_{2}[Zn(CN)_{4}]+Ag\downarrow

Option 1)

displacement with. Metal (Zn)

Correct



hope this helps you

Karthikrikky12 ♥️

Answer 2

$<h1> hii Here is your answer is option 1$