Name the important ore of silver. Write all the steps and reactions in

1.	Name the important ore of silver. Write all the steps and reactions involved in the cyanide process for the extraction of silver from its ore.
Answer» Important ore of silver is silver glance -Ag₂S, Pyragyrite – 3AgS.Sb₂S₃, Horn silver – AgCl Silver nitrate reaction with KCN solution white ppt. of silver cyanide is fonned which dissolves in excess of KCN due to complex formation. Extraction of silver by cyanide process: (i) Concentration: The sulphide ore is crushed, powdered and then concentrated by the froth floatation process. (ii) Treatment with Sodium Cyanide: (iii) Precipitation of silver: (iv) Fusion: The precipitate silver is filtered, pressed, dried and fused with borax when a bright compact mass is obtained. (v) Purification: Silver usually contains impurities of Zn, Cu and Au. This purified by electrolysis process. Thus, we get pure silver.

Name the important ore of silver. Write all the steps and reactions involved in the cyanide process for the extraction of silver from its ore.

Answer»

Important ore of silver is silver glance -Ag₂S, Pyragyrite – 3AgS.Sb₂S₃, Horn silver – AgCl

Silver nitrate reaction with KCN solution white ppt. of silver cyanide is fonned which dissolves in excess of KCN due to complex formation.

Extraction of silver by cyanide process:

(i) Concentration: The sulphide ore is crushed, powdered and then concentrated by the froth floatation process.

(ii) Treatment with Sodium Cyanide:

(iii) Precipitation of silver:

(iv) Fusion: The precipitate silver is filtered, pressed, dried and fused with borax when a bright compact mass is obtained.

(v) Purification: Silver usually contains impurities of Zn, Cu and Au. This purified by electrolysis process. Thus, we get pure silver.