01Full dissociation
Strong acids (HCl, HBr, HI, HNO₃, HClO₄, H₂SO₄) and strong bases (group 1 hydroxides, Ca/Sr/Ba(OH)₂) ionize completely.
So [H⁺] = acid concentration; watch for 2 OH⁻ in Ba(OH)₂.
02Notebook box
Memorize the 6 strong acids.
Worked example: 0.010 M Ba(OH)₂ → [OH⁻] = 0.020 M → pOH 1.70 → pH 12.30.