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(i) Given below are steps for extraction of copper from its ore. Write the reaction involved.
a. Roasting of copper (I) sulphide
b. Reduction of copper (I) oxide with copper (I) sulphide
c. Electrolytic refining
Answer variants:
\(2Cu_2S(s)+3O_2(g)→2Cu_2O(s)+2SO_2(g)\)
\(2Cu_2S(s)+2O_2(g)→2Cu_2O(s)+SO_2(g)\)
\(2Cu_2O(s)+Cu_2S(s)→6Cu(s)+SO_2\)
a. Roasting of copper (I) sulphide:
b. Reduction of copper (I) oxide with copper (I) sulphide:
(ii) Draw the neat and labelled diagram for electrolytic refining of copper.
(Note: Select the correct diagram from the given options.)
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