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Electrolytic Refining of Copper

Write the che...

Question

Write the chemical reaction that takes place during :a)Electrolytic reduction of aluminium trioxide
b)isolation of zinc from zinc blende

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Solution

A) 2 Al₂O₃ + 6F₂ <------> 4AlF₃ + 3O₂

AlF₃ <-------> Al³⁺ + 3F^-

At cathode: Al³⁺ + 3e^- ---------> Al

B) 2ZnS + 3O₂ -------> 2ZnO + 2SO₂
ZnO + C -------> Zn + CO

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