I've been studying the Zinc and Sulphuric acid simple cell (voltaic pile) reaction for the last 2 weeks, reading internet forums and text books alike. The problem i face is that every forum and textbook only goes so far and its awful fustrating. I really hope someone on this forum can take their time to simply explain the process.
Ok, so the way i see it is
Zinc atoms have 2 electrons on their outer orbital and therefore are willing to get rid of these so that they are more stable or less reactive since their outer shell will be complete i.e 8 electrons (simplistic approach and not looking at 2 x n2 calculations)
Sulphuric acid or should it be referred to as dilute sulphuric acid as it would appear that in order for the H2SO4 to be ionised, it must be diluted using H2O.
Now what actually happens with the H2O. Well according to the text books, water or H2O molecules (covalent bonds) effectively collide to form hydroxide OH -ive and hydronium H3O +ive ions. Therefore water exists as a mixture of molecules, hydroxide ions and hydronium ions.
So when the water mixture is added to the Sulphuric Acid, it become dilute and there seems to be a reaction between the H2SO4 and the H2O, the H3O +ive and the OH -ive creating an ionidised solution of +ive and -ive charged ions.
I need to get an understanding on what actually happens here with the water ions and the sulphuric ions and how and why certain atoms are more attracted to other atoms. I need to understand why the solution eventually becomes ZnSO4 in solution. Now why is it that certain molecules i.e acids dissociate releasing a hydrogen ion without releasing a hydroxide ion and what causes this?
Looking at the formula I see the H2SO4 breaks down into H+ive and HSO4. What causes the breakdown extracting the H+ive. In the second reaction I see the HSO4 -ive breaking down into H+ive and SO4 -ive. Again why the extraction or breakoff of the H+.What actually causes this.
So now we have H2SO4 dilute = 2 H +ive +SO4 --ive.
This ionidised solution then attracts the Zn electrons from the Zn. Now the more +ions in the solution the more Zn electrons are lost to the solution. Then these electrons attach to the H+ive thus creating H2 gas. The solution remaining is Zn ++ which dissolves into the solution and the SO4-- bond to form Zinc Sulphate ZnSO4. How are these atoms bonded?
To advance this situation, my understanding is if a copper rod is inserted into the solution (Daniell Cell) and a wire is attached between the Zn rod and the Copper rod, a current will flow or in atomic terms, the Zinc will become positive as its losing electrons and its nucleus (protons) will be more positive. How does this happen. Looking at the atomic structure and electron orbits, i can't see how the copper becomes negative to have a flow from the Zn -- to the Cu ++.
I'm really interested to get your help and simple explanations on this matter