$A g_{2} S + N a C N + Z n ⟶ A g^{+}$

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

Parke's method

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Mac Arthur-Forest method

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Serpek method

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Hall's method

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Solution

The correct option is B Mac Arthur-Forest method
Cyanide process is used for extraction of Ag which is also called Mc-Arthur forest process.

Reactions occurs in extraction of silver -
$A g_{2} S + 4 N a C N \to 2 N a [A g (C N)_{2}] + N a_{2} S$ (reversible reaction)

$4 N a_{2} S + 5 O_{2} + H_{2} O \to 2 N a_{2} S O_{4} + 4 N a O H + 2 S$

and $2 N a [A g (C N)_{2}] + Z n \to N a_{2} [Z n (C N)_{4}] + 2 A g$

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Similar questions

A g_{2} S + N a C N + Z n \to A g

A g_{2} S + N a C N + Z n ⟶ A g

A g_{2} S + N a C N + Z n \to A g

N a [A g (C N)_{2}]

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