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Miners acquire gold by soaking gold-containing ores in an aqueous solution of sodium cyanide. A extremely soluble complex ion of gold forms in the aqueous solution as a result of the redox reaction 4 Au(s) + 8 NaCN(aq) + 2 H2O(l) + O2(g) ---> 4 Na[Au(CN)2](aq) + 4 NaOH(aq) 1. What atomic species is being oxidized? 2. Explain what atomic species is being reduced? 3. Gold miners then reacts the basic aqueous product solution with Zn dust to recover the gold metal. State a balanced redox reaction for the recovery process with zinc.

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Category:- Chemistry
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