Electrolysis

[alga]

Anyone strong in chemistry? What reactions are going on on the electrodes?

In my limited understanding, on the cathode Na+ gets an electron, turns into metallic Na, which then reduces Fe2O3 to Fe and Na2O. This in turn reacts with water, turns into NaOH + H2. Bubbles.

On the anode, CO3-2 gets looses the charge, turns into CO2 and O2, bubbles. Right?

I think the solution must turn progressively more alkaline as CO2 escapes.