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What is the role of zinc metal in the extraction of silver? [AI 2015 Ajmer; AI 2014]

Answer»

During EXTRACTION of silver, the finely POWDERED silver ORE is treated with dilute KCN solution to form a cyano COMPLEX of silver. This complex is WATER soluble. Then zinc is added to the solution. More electropositive zinc displaces silver from the complex.Explanation:



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