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in Chemistry by (56.7k points)

Ag2S + NaCN + Zn → Ag

This method of extraction of Ag by complex formation and then its displacement is called : 

(A) Parke’s method 

(B) MacArthur–Forest method 

(C) Serpeck method 

(D) Hall’s method

1 Answer

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Best answer

Correct Answer is: (A) Parke’s method 

The process mention is rxn is known as Mc.

Arthur forest

Method :

Ag2S + 4NaCN → 2[Ag (CN)2] + 2Na+ + S22-

[Ag (CN)2] + Zn → (Zn (CN)4)2– + 2Ag ↓

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