Acid & Base Database
Comprehensive list of common acids and bases with their Ka and Kb values for accurate pH calculations.
Common Acids
Hydrochloric Acid (HCl)
Strong Acid
Ka: Complete dissociation
Sulfuric Acid (H₂SO₄)
Strong Acid
Ka₁: Complete dissociation
Nitric Acid (HNO₃)
Strong Acid
Ka: Complete dissociation
Acetic Acid (CH₃COOH)
Weak Acid
Ka: 1.8 × 10⁻⁵
Formic Acid (HCOOH)
Weak Acid
Ka: 1.8 × 10⁻⁴
Citric Acid (C₆H₈O₇)
Weak Acid
Ka₁: 7.4 × 10⁻⁴
Common Bases
Sodium Hydroxide (NaOH)
Strong Base
Kb: Complete dissociation
Potassium Hydroxide (KOH)
Strong Base
Kb: Complete dissociation
Calcium Hydroxide (Ca(OH)₂)
Strong Base
Kb: Complete dissociation
Ammonia (NH₃)
Weak Base
Kb: 1.8 × 10⁻⁵
Methylamine (CH₃NH₂)
Weak Base
Kb: 4.4 × 10⁻⁴
Pyridine (C₅H₅N)
Weak Base
Kb: 1.7 × 10⁻⁹