С соляной кислотой реагируют: MgO, ZnO, KOH, Al(OH)₃, BaCO₃, AgNO₃, PbSO₄, Mg
2HCl + MgO = MgCl₂ + H₂O
2HCl + ZnO = ZnCl₂ + H₂O
HCl + KOH = KCl + H₂O
3HCl + Al(OH)₃ = AlCl₃ + 3H₂O
2HCl + BaCO₃ = BaCl₂ + CO₂↑ + H₂O
HCl + AgNO₃ = AgCl↓ + HNO₃
2HCl + PbSO₄ = PbCl₂↓ + H₂SO₄
2HCl + Mg = MgCl₂ + H₂↑