The reaction between metallic silver and aqueous NaCN forming a soluble complex occurs in the presence of

JEE Advanced Chemistry question

Chemistry General Principles and Processes of Isolation of Elements (Metallurgy)JEE Advanced

Not in JEE Main or NEET syllabus

The reaction between metallic silver and aqueous forming a soluble complex occurs in the presence of

(A)Nitrogen
(B)Helium
(C)Argon
(D)OxygenCorrect

Answer: (D)

Solution

In the cyanide (leaching) process, metallic silver is converted to a soluble dicyanoargentate(I) complex in the presence of atmospheric oxygen, which acts as the oxidant: $4Ag +

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Question ID VK-160098