QJEEM02Chbe53: JEE Main 2002 Chemistry - Class 12 JEEM02Chbe53 Solution: The metal extracted by leaching with a cyanide is

Question

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The metal extracted by leaching with a cyanide is

Accepted Answer

Silver ore forms a soluble complex with

NaCN

from which silver is precipitated using scrap zinc.

A{g_2}S + 2NaCN \to

N a [A g {(C N)}_{2}] \overset{Z n}{⟶}

\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,N{a_2}\left[ {Zn{{\left( {CN} \right)}_4}} \right] + Ag \downarrow

\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,

sodargento-cynanide(soluble)

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