CHEMISTRY · Subjective · A Level · Chemistry · Acids and bases · Acids and bases
Problem
The diprotic acid H₂A has pKa₁ = 1.9. In a solution measured at pH = 6.0, the predominant species present is HA⁻, and virtually no A²⁻ is detected. Write an inequality that expresses the relationship between pKa₂ and 6.0.