Double replacement reactions

A reaction between two soluble ionic compounds producing two new ionic compounds where the cations and anions have exchanged 'partners'. You must use the Solubility Table to predict solubility. (Remember you will need to be able to write the ionic and net ionic equations.)

Na₂SO_4(aq) + CaCl_2(aq) ---> CaSO_4(s) + 2NaCl_(aq)

2AgNO_3(aq) + Na₂CO_3(aq) ---> Ag₂CO_3(s) + 2NaNO_3(aq)

2HCl_(aq) + Na₂CO_3(aq) ---> CO_2(g) + 2NaCl_(aq) + H₂O_(l)

Here are those same reactions as they should be written by an AP student...(NOTE: phases are not required)

SO₄^2-(aq) + Ca²⁺(aq) ---> CaSO_4(s)

2Ag⁺(aq) + CO₃^2-(aq) ---> Ag₂CO_3(s)

2H⁺_(aq) + CO₃^2-(aq) ---> CO_2(g) + H₂O_(l)

Solubility Table