Final answer:
The net ionic equation for Ba(OH)2 and H2SO4 is Ba²⁺ (aq) + SO₄²− (aq) → BaSO4 (s), indicating that barium ions and sulfate ions combine to form an insoluble precipitate of barium sulfate.
Step-by-step explanation:
The net ionic equation for the reaction between barium hydroxide Ba(OH)2 and sulfuric acid H2SO4 involves the ions that participate in the formation of the precipitate, in this case, barium sulfate BaSO4. Since BaSO4 is insoluble, it will precipitate out of the solution, leaving the spectator ions uninvolved in the net ionic equation.
Net Ionic Equation:
Ba2+ (aq) + SO42− (aq) → BaSO4 (s)
This shows that the barium ion Ba2+ from the barium hydroxide and the sulfate ion SO42− from the sulfuric acid combine to form the solid barium sulfate precipitate. The correct option among the given choices is d) Ba2+ + 2OH− + 2H+ + SO42− → BaSO4 + 2H2O, however, the water molecules and hydrogen ions can be omitted to reflect the net ionic equation.