5-12 Write chemical equations to represent acid-base reactions

5-12-1. QUESTION: What is chemical equation for the neutralization of stomach acid, HCl, by milk of magnesia, Mg(OH)₂?
A. HCl + Mg(OH)₂ → HMg + Cl(OH)₂
B. 2 HCl + Mg(OH)₂ → 2 HOH + MgCl₂
C. HCl + Mg(OH)₂ → H₂O + MgCl
D. HCl + Mg(OH)₂ → H₂O + MgHCl

5-12-2. What is the chemical equation for the neutralization of nitric acid, HNO₃, by calcium oxide (CaO)?
A. HNO₃ + CaO → HO + CaNO₃
B. 2 HNO₃ + CaO → H₂O + Ca(NO₃)₂
C. HNO₃ + CaO → NO₄ + CaH
D. 2 HNO₃ + CaO → H₂O + CaNO₃

5-12-JJW. What is the correct equation for the complete neutralization of sulfuric acid by potassium hydroxide?
A. H₂SO₄ + KOH → H₂O + KSO₄
B. H₂SO₄ + KOH → H₂O + KHSO₄
C. H₂SO₄ + KOH → H₂O + K₂SO₄
D. H₂SO₄ + 2 KOH → 2 H₂O + K₂SO₄