D-And F-Block Elements Ques 465

Question: In the equation

$ 4M+8C{{N}^{-}}+2H_2O+O_2\to $ $ 4{{[M{{( CN )}_2}]}^{-}}+4O{{H}^{-}} $ Identify the metalM. It is

Options:

A) copper

B) iron

C) gold

D) zinc

Show Answer

Answer:

Correct Answer: C

Solution:

This is cyanide process for gold (M = Au).



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