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Give balanced equations for the following. "Extraction of silver from silver glance by cyanide process". |
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Answer» In case of silver metal, the sulphide ore is treated with sodium cyanide. Sodium argentocynade complex is formed, which on treating with zinc metal gives silver. `Ag_(2)S + 4NaCN rarr 2N[Ag(CN)_(2)] + Na_(2)S` `2Na[Ag(CN)_(2)] + Zn rarr underset ("Soluble") (Na_(2)[Zn(CN)_(4)]) + underset ("ppt")(2 Ag) darr`. |
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