Which of the following reactions is involved in the final step for the extraction of copper from copper pyrite in the Bessemer converter?

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${Cu}_{2} O + 2 FeO \to 2 Cu + 2 Fe + O_{2}$

${Cu}_{2} S + 2 {Cu}_{2} O \to 6 Cu + {SO}_{2}$

$2 {Cu}_{2} O + FeS \to 4 Cu + Fe + {SO}_{2}$

answer is B.

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Detailed Solution

Given Data: It is asked in question that from the following option which reaction is involved in the final step for the extraction of copper from copper pyrite in the Bessemer converter.

Concept Used: Extraction of Copper from cuprous oxide.

Detailed Solution:

We know that in Bessemer converter during extraction of copper from copper pyrite,

the sulphide ore of copper is heated in air until a part is converted to oxide and then further heated in the absence of air to let the oxide react with unchanged sulphide.

Self-reduction of $CuS$ to $Cu$ can be carried out in either a Bessemer converter or Pierce-Smith converter.

$2 {Cu}_{2} S + 3 O - 2 \to 2 {Cu}_{2} O + 2 {SO}_{2}$ $2 {Cu}_{2} O + {Cu}_{2} S \to 6 Cu + {SO}_{2}$

So, from above explanation ${Cu}_{2} S + 2 {Cu}_{2} O \to 6 Cu + {SO}_{2}$ is the final step of the extraction of copper from copper pyrite in Bessemer converter.