Copper sulphate solution is electrolyzed using copper electrodes.… - Vidyadip

Question

Copper sulphate solution is electrolyzed using copper electrodes. Study the diagram given alongside and answer the questions that follows.
(i) Which electrode to your left or right is known as the oxidizing electrode and why?
(ii) Write the equation representing the reaction that occurs
(iii) State two appropriate observations for the above electrolysis reactions.

✓

Answer

(i) The right electrode is the anode and oxidising electrode $Cu \rightarrow Cu ^{2+}+2 e ^{-}$losing electrode.
(ii) Reaction at the anode: $Cu \rightarrow Cu ^{2+}+2 e ^{-}$
Reaction at the cathode: $Cu ^{2+}+2 e ^{-} \rightarrow Cu$
(iii) The anode dissolves and anode mud containing precious metal is recovered.

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