Write the balanced net ionic equation for a solution formed from CaCl2 (aq) and Na2SO4 (aq)

Ca^2 + (aq) + SO4^2 - (aq) → CaSO4 (s)

Explanation:

Step 1: The unbalanced equation

CaCl2 (aq) + Na2SO4 (aq) → ...

Step 2: Balancing the equation

CaCl2 (aq) + Na2SO4 (aq) → CaSO4 + NaCl

On the left side we have 2 times Cl (in CaCl2), On the right side we have 1 time Cl (in NaCl)

On the left side we have 2 times Na (in Na2SO4), on the right side we have 1 time Na (in NaCl)

To balanced the amount of Na and Cl we have to multiply NaCl, on the right side, by 2. Now the equation is balanced.

CaCl2 (aq) + Na2SO4 (aq) → CaSO4 (s) + 2NaCl (aq)

The net ionic equation, for which spectator ions are omitted - remember that spectator ions are those ions located on both sides of the equation - will look like this

Ca^2 + (aq) + SO4^2 - (aq) → CaSO4 (s)