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CGP EDU Academic Team
Published on: August 13, 2026
Native silver metal forms a water soluble complex with a dilute aqueous solution of NaCN in the presence of:
Text Solution
Verified by ExpertsThe 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 to silver (I) ion which then produces soluble complex with CN – ions.
2Ag + 4 NaCN + 
O 2 + H 2 O 
2Na[Ag(CN) 2 ] + 2NaOH.
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