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Extraction of Low Reactive Metals

In the extrac...

Question

In the extraction of copper from its sulphide ore, the metal finally obtained by the reduction of cuprous oxide with

A

Carbon monoxide

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B

Copper (I) sulphide

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C

Sulphur dioxide

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D

Iron (II) suphide

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Solution

The correct option is B Copper (I) sulphide
It is an example of auto reduction
$2 C u_{2} S + 3 O_{2} \to 2 C u_{2} O + 2 S O_{2}$
$2 C u_{2} O + C u_{2} S \to 6 C u + S O_{2}$

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Similar questions

Q. In the extraction of copper from its sulphide ore, metal is finally obtained by the oxidation of cuprous sulphide with:

Q. In the extraction of copper from its sulphide ore, the metal is formed by reduction of

C u_{2} O

with__________.

Given below is the steps for extraction of Copper from its ore. Write the reactions involved.

(a) Roasting Copper (I) Sulphide.

(b) Reduction of Copper (I) oxide with Copper (I) sulphide

Q. In the extraction of copper from its sulphide ore, the metal is formed by the reduction of

C u_{2} O

Q. Aluminium and copper are extracted from their oxide and sulphide ores respectively. Which of the following is correct ?
I. Copper is extracted by the auto reduction of copper oxide by copper sulphide.
II. Aluminium cannot be obtained by chemical reduction due to its strong affinity for oxygen.
III. In electrometallurgy of

A l

, graphite is used as cathode to avoid reoxidation of

A l

A l_{2} O_{3}

by preventing formation of

O_{2}

.
IV. Sulphide ores of copper are difficult to be reduced than the oxide ores.

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