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Native silver metal forms a water solubl...

Native silver metal forms a water soluble complex with a dilute aqueous solution 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
Metallic silver dissolves in sodium cyanide solutoin in the presence of oxygen to form a water soluble complex i.e , sodium argentocyanide.
`4Ag + 8NaCN + 2H_2O O_(2(air)) rarr 4Na[Ag(CN)_2] + 4NaOH`
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