alleryWhich equation plates silver from argentocyanide?
A[Ag(CN)2]−(aq) + e− → Ag(s) + 2CN−(aq)
B[Ag(CN)2]−(aq) + e− → Ag(s) + CN−(aq)
C[Ag(CN)2]−(aq) + 2e− → Ag(s) + 2CN−(aq)
D[Ag(CN)2]−(aq) + e− → Ag2(s) + 2CN−(aq)
Answer & Solution
Correct answer: A. [Ag(CN)2]−(aq) + e− → Ag(s) + 2CN−(aq)
The silver complex gains an electron and yields silver metal at the cathode.
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