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Native silver metel froms a water solube...

Native silver metel froms a water solube, complesx with a dilute aqueous wsolution of `NaCN` in the presence of

A

nitrogen

B

oxygen

C

carbon dioxide

D

argon

Text Solution

Verified by Experts

The correct Answer is:
B
Reaction is reversible so to get the maximum yield of the product , the reaction is carried out in presence of oxygen. Also oxygen oxidises silver `(I)` ion which then produces soluble complex with CN ions.
`2Ag+4 NaCN+1/2 O_(2)+H_(2)O hArr 2Na[Ag(CN)_(2)]+2NaOH`.
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