Explain extraction of gold by chemical reactions.
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Extraction of gold involves leaching the metal with CN- Oxidation reaction: 4 Au (s)+8CN-(aq.) +2H2O(aq.) +O2(g)→[Au(CN)2]-(aq.)
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Extraction of gold involves leaching the metal with CN-Oxidation reaction 4 Au (s)+8CN-(aq)+2H2O(aq)+O2(g) [Au(CN)2]-(aq)
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