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  • Copper matte produced during the extraction of copper contains  <img alt="\begin{aligned} \text{A}.& \mathrm{Cu}_2 \mathrm{~S} \\ \text{B}.& \mathrm{FeS} \\ \text{C}.& \m

Copper matte produced during the extraction of copper contains 

\begin{aligned} \text{A}.& \mathrm{Cu}_2 \mathrm{~S} \\ \text{B}.& \mathrm{FeS} \\ \text{C}.& \mathrm{CuSO}_4 \\ \text{D}.& \mathrm{CuF}_2 \end{aligned}

Option: 1

A only


Option: 2

B and D only


Option: 3

A and B only


Option: 4

A and C only


Answers (1)

best_answer

\mathrm{FeS \; and\; Cu_{2}S} is present in Copper Matter.

Silica is added to Copper matte followed by hot air blast. It converts impurities such as FeS and FeO into slag. Whereas Copper present in \mathrm{Cu_{2}S/ Cu_{2}O} is extracted. 

The various reactions involved in extraction of copper from cuprous oxide are:

\begin{aligned} & 2 \mathrm{FeS}+3 \mathrm{O}_2 \rightarrow 2 \mathrm{FeO}+2 \mathrm{SO}_2 \\ & \mathrm{FeO}+\mathrm{SiO}_2 \rightarrow \mathrm{FeSiO}_3 \text { (slag) } \\ & 2 \mathrm{Cu}_2 \mathrm{~S}_2+3 \mathrm{O}_2 \rightarrow 2 \mathrm{Cu}_2 \mathrm{O}+2 \mathrm{SO}_2 \\ & 2 \mathrm{Cu}_2 \mathrm{O}+\mathrm{Cu}_2 \mathrm{~S} \rightarrow 6 \mathrm{Cu}+\mathrm{SO}_2 \end{aligned}

Posted by

Gautam harsolia

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