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Electrolysis and Electrolytes

Question

Write the equation of the reactions which take place at the cathode and anode when acidified water is electrolysed.

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Solution

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Cathode reaction : $2 H^{+} + 2 e^{-} \to 2 H \to H_{2}$
Anode reaction : $2 O H^{-} - 2 e^{-} \to 2 O H \to H_{2} O + O + O \to O_{2}$

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