The Ka of HNO₂ is 4.5 × 10⁻⁴ . What is the Kb of NO₂- at 298 K?
Kw = Ka × Kb = 1.0 × 10⁻¹⁴ , Kb = (1.0 × 10⁻¹⁴/4.5 × 10⁻⁴) ≈ 2.22 × 10⁻¹¹ .
Ref: NCERT Class 11 Chemistry > Chapter 6: Equilibrium > Topic: Physical Equilibrium - Solid-Liquid Gas-Liquid and Henry's Law
