Question:
In the question of electrolysis products of aqueous nacl we write an equation for anode as 2H2O => O2 + 4H+ + 4e- Why can't it be 4OH- => O2 + 2H2O + 4e-
Answer:
This is because 4OH- in the solution comes from 4H2O. Therefore, we write net reaction at anode in terms of H2O.
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