Electrolysis

Anode = positive electrode

Cathode = negative electrode

Anion = negative ions

Cation = positive ions

Oxidation

Is

Loss

Reduction

Is

Gain             (of electrons)

Writing half equations

1. Write out full equation.

2. Write out electrolytes in ion form, e.g A2+  B2-

3. Work out if they are losing or gaining electrons. e.g A2+ gains, B2- loses

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