Using Electrolysis on a solution of sodium sulphate with some universal indicator using inert electrodes

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5 Terms

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Observation (Anode)

Solution turns red at anode

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Observation (cathode)

Solution turns blue at the cathode

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Explanation (Anode)

2H2O - 4e- → O2 + 4H+

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What colour does H+ change the indicator to and why?

Red as H+ is acidic

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What colour does OH- change the indicator to and why?

Blue as OH- is basic