The migration of ions during electrolysis of potassium manganate(VII)

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Crystals of potassium permanganate in a glass container

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Try this class practical to investigate the migration of ions during electrolysis as evidence for the ionic model. Includes kit list and safety instructions.

In this experiment, students observe what happens during the electrolysis of potassium manganate(VII), with a focus on how (+) and (–) ions migrate towards electrodes of opposite charge.

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