I think there are a couple of slight problems here. For the first reaction, you can't go from having a neutral reactant side (net charge of zero), to a product with a net charge of -1.... so I think the product is sodium acetate (NaCH3COO), and HCO3 (carbonic acid). I realize that carbonic acid can further break down into water and CO2, but the equation would have to be rebalanced in order to indicate that.
Foir the next two, the products should include Na2SO4, (NaSO4 is a charged species), so you will need to rebalance those equations as well.
So to summarize, you need to balance the equations so that the products that should form are possible.