You visited us 1 times! Enjoying our articles? Unlock Full Access!

Cyanide or Macarthur Forrest Process

Extraction of...

Question

Extraction of silver is achieved by initial complexation of the ore (Argentite) with $X$ followed by reduction with $Y . X$ and $Y$ , respectively, are:

C N^{-}

and

Z n

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

C N^{-}

and

C u

No worries! We‘ve got your back. Try BYJU‘S free classes today!

C l^{-}

and

Z n

No worries! We‘ve got your back. Try BYJU‘S free classes today!

B r^{-}

and

Z n

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is D $C N^{-}$ and $Z n$
The process of extraction of Silver or Gold is done by the Mac-Arthur Forest process. Where NaCN is used as a reagent and an electropositive metal is added to further take out the pure metal from the complex formed during the reaction as represented by the following reaction.

$A g_{2} S + 4 N a C N \to 2 N a [A g (C N)_{2}] + N a_{2} S$

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

Suggest Corrections

Similar questions

R o a s t i n g - -------- \to C N^{-}, H_{2} O, O_{2} H O^{-} + X Z n - \to Y + A u

C N^{-} + H_{2} O O_{2} - \to

[P] + O H^{-}

↓ Z n

[Q] + A g

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

ln

{C N}^{-} + H_{2} O_{2} [X] + {O H}^{-}

[X] +

\to [Y] +

roasted gold ore + C N^{-} + H_{2} O O_{2} - \to [X] + O H^{-}

[X] + Z n \to [Y] + A u

[X]

[Y]

Join BYJU'S Learning Program