The set-up below was used during the electrolysis of aqueous magnesium sulphate using inert electrodes.

The set-up below was used during the electrolysis of aqueous magnesium sulphate using inert electrodes.

a) Name a suitable pair of electrodes for this experiment.
b) Identify the anions and cations in the solution.
c) Explain the change that occurred to the concentration of magnesium sulphate solution during the experiment

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a) Platinum/ graphite

b) Cations - Mg²⁺ and H⁺

Anions – OH^- and SO^2- ₄

c) Concentration increases because the elements of water are removed in the ratio in which it occurs in water. This amounts to removing some water from solution

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johnmulu answered the question on April 27, 2017 at 07:40

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