Question

A soln. contains Mg2+ ions, Fe2+ ions and Cu2+ ions. On passing an electric current through this soln. which ions will be the first to be discharged at the cathode? Write the equation for the cathode reaction.

  • Electrolysis
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Answer

Cu2+ (Copper ions will get discharged at cathode)

Reaction at Cathode:

Cu2+ + 2e– ⟶ Cu

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