Practice question
Question
The Kb of NH₃ is 1.8 × 10⁻⁵ . What is the Ka of NH₄+ ?
Explanation
Kw = Ka × Kb = 1.0 × 10⁻¹⁴ , Ka = (Kw/Kb) = (1.0 × 10⁻¹⁴/1.8 × 10⁻⁵) ≈ 5.56 × 10⁻¹⁰ .
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