Formation of metallic copper from the sulphide ore in the commercial thermo-metallurgical process essentially involves which one of the following reactions?

C u_{2} S + \frac{3}{2} O_{2} \to C u_{2} O + S O_{2}

;

C u O + C \to C u + C O

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C u_{2} S + \frac{3}{2} O_{2} \to C u_{2} O + S O_{2}

;

2 C u_{2} O + C u_{2} S \to 6 C u + S O_{2}

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C u_{2} S + 2 O_{2} \to C u S O_{4}

;

C u S O_{4} + C u_{2} S \to 3 C u + 2 S O_{2}

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C u_{2} S + \frac{3}{2} O_{2} \to C u_{2} O + S O_{2}

;

C u_{2} O + C O \to 2 C u + C O_{2}

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Solution

The correct option is B $C u_{2} S + \frac{3}{2} O_{2} \to C u_{2} O + S O_{2}$ ; $2 C u_{2} O + C u_{2} S \to 6 C u + S O_{2}$
In the extraction of copper, reactions occurs:
$2 C u_{2} S + 3 O_{2} \to 2 C u_{2} O + 2 S O_{2}$
$C u_{2} S + 2 C u_{2} O \to 6 C u + S O_{2}$
and
$2 C u_{2} S + 5 O_{2} \to 2 C u S O_{4} + 2 C u O$
$2 C u_{2} S + C u S O_{4} \to 4 C u + 2 S O_{2}$
Also, copper is not reduced by carbon/carbon monoxide.
Option B is correct.

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Similar questions

Name the process used for the formation of blister $C u$ by following reaction :(unbalanced reactions)

$2 C u_{2} S + 3 O_{2} \to C u_{2} O + S O_{2}$

C u_{2} O + C u_{2} S \to C u + S O_{2}

C u_{2} S + C u S O_{4} \to C u + S O_{2}

C u_{2} O

C u_{2} S

A : F e O + S i O_{2} \to F e S i O_{3}

B : 2 F e S + 3 O_{2} \to 2 F e O + 2 S O_{2}

C : 2 C u_{2} S + 3 O_{2} \to 2 C u_{2} O + 2 S O_{2}

D : 2 C u_{2} O + C u_{2} S \to 6 C u + S O_{2}

Select reactions actually taking place :

C u_{2} O

C u_{2} S

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