Explain the role of NaCN in the extraction of silver.is it necessary to write reaction or fine to write answer asNaCN forms a complex with Ag which again on reaction with Zn gives pure Ag. So, What should I expect with the examiner
Role of NaCN or KCN = In the extraction of gold and silver, the metal is leached with NaCN or KCN, which is an oxidation reaction.
During the process, Ag is oxidised to Ag+ .
Here M =Ag or Au.
Subsequent reaction with Zn leads to formation of free metal.
You should write a reaction along with the explanation. Reaction is an important part of reasoning in this question.