Write the net ionic equation for the reaction of aqueous solutions of barium chloride and sodium sulfate.
◦ BaCl(aq) + NaSO4(aq) → BaSO4(s) + NaCl(aq)
◦ BaCl(aq) + SO42- (aq)→ BaSO4(s) + Ba2+ (aq)
◦ Ba2+(aq) + SO42-(aq) → BaSO4(aq)
◦ Ba2+ (aq)+ SO42- (aq)→ BaSO4(s)
◦ no reaction