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प्रश्न
Describe the role of the NaCN in the extraction of silver from silver ore.
एक पंक्ति में उत्तर
टिप्पणी लिखिए
उत्तर
It reacts with the silver ore, Ag2S, (Argentite) to form soluble complex from which silver can be displaced by adding more electropositive metal like Zn
\[\ce{Ag2S + 4NaCN + 2O2<=> 2Na[Ag(CN)2] +Na2SO4}\]
\[\ce{2Na[Ag(CN)2] + Zn -> Na2[2n(CN)4] + 2Ag↓}\]
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