Which base NH4OH or Ba (OH) 2 required more H2SO4 to reach neutralization?

Ba (OH) ₂ requires more H₂SO₄ to reach neutralization ...

Explanation:

At neutralization, acid neutralize base to form salt and water at equivalence.

For NH₄OH: NH₄OH is neutralized by H₂SO₄ according to the reaction:

2NH₄OH + H₂SO₄ → (NH₄) ₂SO₄ + 2H₂O.

It is clear that every 2 mol of NH₄OH need 1 mol of H₂SO₄ to be neutralized.

For Ba (OH) ₂: Ba (OH) ₂ is neutralized by H₂SO₄ according to the reaction:

Ba (OH) ₂ + H₂SO₄ → BaSO₄ + 2H₂O.

It is clear that every 1 mol of NH₄OH needs 1 mol of H₂SO₄ to be neutralized.

So, Ba (OH) ₂ requires more H₂SO₄ to reach neutralization.