Question

Of the following, which is true of the electrolysis of water?

Select the correct answer below:
The overall reaction is H2O(l)→H2(g)+O(g).
Bases are typically added to increase the concentration of hydroxide ion in solution.
The reaction at the cathode is 2H2O(l)→O2(g)+4H+(aq)+4e−.
The reaction at the anode is 2H2O(l)→O2(g)+4H+(aq)+4e−.

Answer 1

Answer: the reaction at the anode is 2H2O = O2 + 4H + 4e-