Gold is isolated from rocks by reaction with aqueous cyanide, CN−: 4Au(s)+8NaCN(aq)+O2(g)+H2O(l)→4Na[Au(CN)2](aq)+4NaOH(aq) The [Au(CN)2]− ion can...

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Gold is isolated from rocks by reaction with aqueous cyanide, CN−: 4Au(s)+8NaCN(aq)+O2(g)+H2O(l)→4Na[Au(CN)2](aq)+4NaOH(aq) The [Au(CN)2]− ion can...

Gold is isolated from rocks by reaction with aqueous cyanide, CN−:

4Au(s)+8NaCN(aq)+O2(g)+H2O(l)→4Na[Au(CN)2](aq)+4NaOH(aq)

The [Au(CN)2]− ion can be converted back to Au(0) by reaction with Zn(s) powder. Write a balanced chemical equation for this reaction.

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Answer 1

Answer #1

Answer:-

The balanced equation for the reaction between [Au(CN)₂]^- and Zn is given as follows,

2[Au(CN)₂]^-(aq) + Zn(s) ———> 2Au(s) + [Zn(CN)₄]^2-(aq)

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Answer 2

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Gold is isolated from rocks by reaction with aqueous cyanide, CN−: 4Au(s)+8NaCN(aq)+O2(g)+H2O(l)→4Na[Au(CN)2](aq)+4NaOH(aq) The [Au(CN)2]− ion can...

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Gold is isolated from rocks by reaction with aqueous cyanide, CN−: 4Au(s)+8NaCN(aq)+O2(g)+H2O(l)→4Na[Au(CN)2](aq)+4NaOH(aq) The [Au(CN)2]− ion can...

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Add Answer to: Gold is isolated from rocks by reaction with aqueous cyanide, CN−: 4Au(s)+8NaCN(aq)+O2(g)+H2O(l)→4Na[Au(CN)2](aq)+4NaOH(aq) The [Au(CN)2]− ion can...

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Gold is isolated from rocks by reaction with aqueous cyanide, CN−: 4Au(s)+8NaCN(aq)+O2(g)+H2O(l)→4Na[Au(CN)2](aq)+4NaOH(aq) The [Au(CN)2]− ion can...