Which additional product balances the reaction h2so4 + 2naoh → na2so4 +

H₂O

Explanation:

The additional product that balances the reaction is water (H₂O).

Therefore, the complete balanced equation for the reaction is;

H₂SO₄(aq) + 2NaOH(aq) → Na₂SO₄(aq) + H₂O(l)

Balancing a chemical equation ensures that the law of conservation of mass is obeyed by the reaction.The reaction is an example of a neutralization reaction where an acid, H₂SO₄, reacts with a base, NaOH to form a salt and water.In this case the salt formed is sodium sulfate (Na₂SO₄)