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Grade: 12
        Describe role of NaCN in extraction of silver from silver ore
one year ago

Answers : (4)

Pooja
17 Points
							Extraction of SilverRole 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.
						
one year ago
Umakant biswal
5349 Points
							
dear pooja ,
in the extraction of gold and silver , the metal is leached with NACN or Kcn , which is an oxidation reaction , 
2- during this process Ag is oxidised to Ag + 
then the reaction with zn result in formation of free metal 
, if u want me to mention the reaction , then let me know , 
HOPE IT CLEARS 
REGARDS 
one year ago
Muskan Kharbanda
11 Points
							Role of NaCN in the extraction of silver (Ag) is to do the leaching of Ag ore in the presence of air from which the silver is obtained later by replacement.4Ag + 8CN- + 2H2O + O2 → 4 [Ag(CN)2-] + 4OH-
						
7 months ago
Md Sohail
11 Points
							Silver and gold ores containing native metal are leached with a dilute solution of  Sodium cyanide(NaCN) {or Potassium cyanide(KCN) } in the presence of air.This is an oxidation reaction. During this process Ag is oxidised to Ag + , then the reaction with Zn result in formation of free metal.Ag2S + 4NaCN --> 2Na[Ag(CN)2] + 4Na2S2Na[Ag(CN)2]+Zn --->Na2[Zn(CN)4]+4Ag(ppt.)
						
6 months ago
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