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Cyanide or Macarthur Forrest Process

In the cyanid...

Question

In the cyanide extraction process of silver from argentite ore, the oxidizing and reducing agents used are:

A

$O_{2}$ and $C O$ respectively

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B

$O_{2}$ and Zn dust respectively

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C

$H N O_{3}$ and Zn dust respectively

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D

$H N O_{3}$ and $C O$ respectively

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Solution

The correct option is B
$O_{2}$ and Zn dust respectively

The reactions involved in the cyanide extraction process are:
$A g_{2} S + 4 N a C N ⟶ 2 N a [A g (C N)_{2}] + N a_{2} S$

In this reaction, oxygen is the oxidizing agent.
$4 N a_{2} S + 5 O_{2} + 2 H_{2} O ⟶ 2 N a_{2} S O_{4} + 4 N a O H + 2 S$

Zn dust is used for the reduction:
$2 N a [A g (C N)_{2}] + Z n ⟶ N a_{2} [Z n (C N)_{4}] + 2 A g$

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Similar questions

Q. In cyanide extraction process of silver from argentite ore, the oxidizing and reducing agents are respectively.

Q. Assertion :In cyanide process for the extraction of gold and silver from their native ores, the cyanide solution acts as a reducing agent to reduce the gold and silver compounds present in the ores into the metallic states. Reason: In the extraction of gold and silver, the cyanide solution acts as complexing reagent in the presence of air and form their respective soluble complexes.

Q. In the cyanide process for extraction of gold and silver from ores, the cyanide solution acts as a :

Q. Name the important ore of silver. Write all the steps and reactions involved in the Cyanide process for the extraction of silver from its ore.

Q. STATEMENT-1 : Silver extraction is done by dissolving its ore into cyanide solution.
STATEMENT-2 : In cyanide process, the silver is precipitated from soluble complex of silver of zinc-dust.

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