AQA GCSE Chemistry - Electrolysis of Aqueous Solutions 4.4.3.4
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4 Terms
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Ions Discharged
Occurs when an aqueous solution is electrolysed using inert electrodes. Dependent on the relative reactivity of the elements involved.
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At Negative Electrode
Hydrogen produced if the metal is more reactive than the hygrodgen.
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At Positive Electrode
Oxygen is produced unless solution contains halide ions when halogen is produced.
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Halide Ions at Positive Electrode
Only occurs when aqueous solution water molecules break down producing discharged hydrogen and hydroxide ions.