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Question
Give the balanced equations for the conversion of argentite (Ag2S) to metallic silver.
One Line Answer
Solution
Ag2S + 4NaCN ⇌ 2Na[Ag(CN)2] + Na2S
Argentite
\[\ce{4Na2S + 2H2O +\underset{\text{(Air)}}{5O2}-> 2Na2SO4 + 4NaOH + 2S}\]
2Na[Ag(CN)2] + Zn → Na2 [Zn(CN)4] + 2Ag↓
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