Question

however, when electricity is passed through water via two electrodes, a cathode and an anode. "

Answer 1

Explanation:

• Water has not got any ions in large amount to carry electricity under normal conditions.
• However when a large potential difference is applied, it can trigger ionisation of water.
• Under normal conditions, if you add an electrolyte (That is an ionic compond such as NaCl, KCl, Na2SO4 etc.) in the water, it readily dissociates in water and ceeates free ions.
• These free ions contribute the electric current even under low PD.

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