Give the formula to show the reactants and products for the following chemical reaction. The reaction occurs in aqueous solution unless otherwise indicated. Represent substances in solution as ions if the substance is extensively ionized. Omit formulas for any ions or molecules that are unchanged by the reaction. In all cases a reaction occurs. You need not balance (Poster's note: I'd like to try to balance anyway, but I'll do it on my own.)
a. Solid calcium carbonate is strongly heated.
b. A piece of nickel metal is immersed in a solution of cupric sulfate.
c. Equal volumes of equimolar solutions of disodium hydrogen phosphate and hydrochloric acid are mixed.
d. Chlorine gas is bubbled into a solution of sodium bromide.
e. Ammonia gas is bubbled into a solution of ethanoic acid.
f. Solid ammonium carbonate is added to a saturated solution of barium hydroxide.
g. Drops of liquid dinitrogen trioxide are added to distilled water.
h. Solutions of potassium permanganate and sodium oxalate are mixed.
I don't know, but there may be some here that I don't know about.
The Attempt at a Solution
a. CaCO3(s) --> CaO(s) + CO2(aq)
b. Ni(s) + Cu2+(aq) --> Ni2+(aq) + Cu(s)
c. 2 Na+(aq) + 2 H+(aq) + PO43-(aq) + Cl-(aq) -->
d. Cl2(g) + 2 Br-(aq) --> Br2(g) + 2 Cl-(aq)
e. NH3(g) + H+(aq) --> NH4+(aq)
f. (NH4)2CO3(s) + Ba(OH)2(aq) -->
g. N2O3(l) + H2O(l) --> 2 H+(aq) + 2 NO2-(aq)
h. K+(aq) + 2 Na+(aq) + MnO4-(aq) + C2O42-(aq) -->
I'm slightly stuck on c and f (I think I can do them if I really concentrate), but I'm lost on h. I got a hint that it involves a redox reaction. Any tips on the three? And are the other five right?
EDIT: I believe I've done f...
(NH4)2CO3(s) + Ba2+(aq) --> 2 NH4+(aq) + BaCO3(s)