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Question
Name the important ore of silver. Write all the steps and reactions involved in the Cyanide process for the extraction of silver from its ore.
Solution
Silver :
Argentite or silver glance `(Ag_2S)`
Leaching Process:
Steps:
`Ag_2S + 4NaCN ⇌ 2Na[Ag(CN)_2] + Na_2S`
`AgCl + 2NaCN ⇌ Na[Ag(CN)_2] + NaCl`
`Na_2S + 2O_2 -> Na_2SO_4`
`Ag_2S + 4NaCN + 2O_2 -> 2Na[Ag(CN)_2] +Na_2SO_4`
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Cyanides, Isocyanides and Nitro Compounds
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