hey...i need help equations on neutralisation please?!?!?

Question

I have a couple of equations that i am having trouble balancing and finding the product of these equations...can you please help me out?
1) Aluminium hydrogencarbonate + sulfuric acid solution

2) Potassium hydroxide + sulfur trioxide

3) Sulfurious acid + iron III hydrogencarbonate

4) Ammonium hydrogencarbonate + hydrochloric acid

I had 20 of these questions, most of them i managed to work out...but these ones troubled me...
can you please explain your answers. Cheers =)

Answer 1

1. Sulfuric acid is the acid, and aluminum hydrogen carbonate is the base...well actually the HCO3- anion is the base. It is a proton acceptor, and the acid is the proton donor. The first step is the formation of H2CO3, which then decomposes to water and carbon dioxide (which bubbles off). The product is aluminum sulfate. Here is a balanced equation.

2 Al(HCO3)3 + 3 H2SO4 --> 6 H2O + 6 CO2 + Al2(SO4)3

As for the second question, I didn't think they would react. But KOH is a base...and addition of water to SO3 makes H2SO4...so if the reaction was performed in water,

2 KOH + H2SO4 --> K2SO4 + 2 H2O

3. I don't know what sulfurious acid is...but if you use sulfuric acid you're probably going to end up with:

2 Fe(HCO3)3 + 3 H2SO4 -->Fe2(SO4)3 + 6 H2O + 6 CO2

4. [NH4][HCO3] + HCl --> NH4Cl + H2O + CO2

Hope this helps.