Question

equation for extraction of silver by leaching method with sodium cyanide and show the leaching process in redox reaction​

Answer 1

hey mate here is ur answer ..

Silver and gold ores containing native metal are leached with a dilute solution of Sodium cyanide(NaCN) {or Potassium cyanide(KCN) } in the presence of air. This is an oxidation reaction. ... Ag2S + 4NaCN --> 2Na[Ag(CN)2] + 4Na2S2Na[Ag(CN)2]+Zn --->Na2[Zn(CN)4]+4Ag(ppt.).

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