Complete and balance each acid-base equation. 2 H2SO4 (aq) + _ Ca(OH)2 (aq) ? HClO4 (aq) + _ KOH (aq) ? H2SO4 (aq) + _ NaOH (aq) ?
Answer
Balanced Acid-Base Reactions
1) H2SO4 (aq) + Ca(OH)2 (aq) → CaSO4 (aq) + 2 H2O (l)
Sulfuric acid is a diprotic acid, and calcium hydroxide is a strong base. One mole of Ca(OH)₂ neutralizes one mole of H₂SO₄ by donating two OH⁻ to form two H₂O molecules and a salt, CaSO₄.
2) HClO4 (aq) + KOH (aq) → KClO4 (aq) + H2O (l)
Perchloric acid is a strong monoprotic acid, and KOH is a strong base. This is a simple 1:1 neutralization forming water and potassium perchlorate.
3) H2SO4 (aq) + 2 NaOH (aq) → Na2SO4 (aq) + 2 H2O (l)
Sulfuric acid (diprotic) reacts with two moles of sodium hydroxide, producing two water molecules and sodium sulfate as the neutral salt.