Silver is extracted from the crude metal by leaching with a solution of NaCN in the presence of air. The role… · ABC26IN1547
Subject: Inorganic Chemistry · Chapter: Metallurgy And Complex Formation · Topic: Metallurgy and complex formation · Exam: BHU Post-graduate Entrance Test 2014 · Marks: 2 · Difficulty: Medium
Silver is extracted from the crude metal by leaching with a solution of NaCN in the presence of air. The role of NaCN is to :
(a)oxidize Ag to Ag⁺
(b)form the complex $[\mathrm{Ag(CN)_4}]^{3-}$
(c)form the complex $[\mathrm{Ag(CN)_4}]^{2-}$
(d)form the complex $[\mathrm{Ag(CN)_2}]^-$
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