Ag_(2)S + 4NaCN hArr 2Na[Ag(CN)_(2)]+ Na_(2)S . Oxidation of sodium sulphide formed is the important step in the extration of silver from its ore . Justify.

Ag_(2)S + 4NaCN hArr 2Na[Ag(CN)_(2)]+ Na_(2)S . Oxidation of sodium su

1.	Ag_(2)S + 4NaCN hArr 2Na[Ag(CN)_(2)]+ Na_(2)S . Oxidation of sodium sulphide formed is the important step in the extration of silver from its ore . Justify.
Answer» Solution :In the extraction of silver from its ore, of the IMPORTANT steps is the FORMATION of sodium argentocyanide and sodium sulphide that is a REVERSIBLE reaction. To prevent the reversibility of the reaction sodium sulphide should be subjected to oxidation . because accordingto LE Chatelier's principle , with the removal of one of the products , the reaction SHIFTS in the forward direction.