what happens well so we positively charged
RJR hearts this negatively charged
electro all settled electrons
well transfer you two are so here molecule
that means they're so you have all the reduced
so this section is work reduction occurs
that means be definition it must be our
kelso now likewise when these molecules or ions
hit this little love electro they
get of some of these electrons because electrons horrible for me negative charge
to the positive charge so when this hits electrons travel
the inside is a lecture on and the international circuit
travel all the way down here so what happens when electrons Lee well this guy is oxidized into
diatomic gases so if that operates into our environment and this is where oxidations explains
and so by definition this guy is our and no so noticed two important differences
I between voltaic cells and electrolytic cells in so our I cathode in this situation he's nake and now I'm no is positive
well voltaic cell cells its reverse arts now always positive and I'll is negative and that's because this electron
doesn't travel this may look it doesn't take cells my travels this way due to this outside batteries source
another important difference obviously is the fact that the election it sells
we have outside batters source outside power source
enought I'll take cells we don't have it now so let's look at the oxidation reaction that occurs
an hour and I'll so to move these molecules to all these ions give of those two electrons for me
our atomic gas molecule this item gas molecule that reason to our environment and let's look at our reduction
reaction this reduction reaction accurs the following batter to sodium on us react with two electrons
wednesday take this matter of they take up those electrons for me too so you saw our markets were two moles
also in salt molecules no I'm not reaction it's just that the ship this guy to this guy North electrons can so you simply get
the following that results reaction now if we were to walk up I the electrode potentials were that cell potentials for this reactionn this reaction we get the following voltages notify the net on the final cell voltage was simply out these guys off and we get-4 4072 votes so that means that much voltage must be supplied where are electrolytic cell by this battery to Howard this reaction so decomposition of this guy requires energy now all their decomposition reactions are very popular for example the compositional war now and then thats lecture work to look the decomposition I'll 8 we as sodium chloride that's the little bit different and we'll see how