1.

Write the balanced equations for extraction of silver from glance by cyanide process.

Answer» In case of silver metal, sulphide ore is treated with sodium cyanide. Sodium argentocyanide complex is formed which on treating with zinc metal gives silver.
`Ag_2S+4NaCNto2Na[Ag(CN)_2]+Na_2S`
`2Na[Ag(CN)_2]+ZntoNa_2[Na_2[Zn(CN)_4]+2AgIdarr`


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