Question

Write the reaction involved in the extraction of silver after the Silver Ore has been leached with NaCN?

Answer 1

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-

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