Solving chemical reactions?

Question

Can someone please help me with these reactions?

1. Ammonium sulfate reacts with barium nitrate.

2. Chlorine gas is bubbled through a solution of sodium bromide.

I need to predict the product and write a balanced equation. I have no idea how to do that.

Answer 1

1white precipitate of barium sulfate

2 chlorine reduces bromide to dark color of bromine

Answer 2

Pay a bit more care to the state symbols.

(NH4)2SO4(aq) + Ba(NO3)2(aq) -->  BaSO4(s) + 2NH4NO3(aq)

Cl2(g) + 2NaBr(aq) --> 2NaCl(aq) + Br2(aq)

Bromine is soluble in water and will exist as a solution of "bromine water".

Bromine also reacts with water to a slight extent to produce HBr and HOBr.

Br2(aq) + H2O(l) <==> HBr(aq) + HOBr(aq)

Answer 3

(NH4)2SO4 (Aqueous) + Ba(NO3)2 -> 2 NH4NO3 (aqueous) + BaSO4 (solid)

Cl2 (gas) + 2 NaBr (aqueous) -> 2 NaCl (aqueous) + Br2 (gas)