Practice question

MCQ

Question

The Ka of HSO₄- is 1.2 × 10⁻² . What is the Kb of SO₄²⁻ at 298 K?

Options

Choose one · Correct answer highlighted

1.2 × 10⁻² 1.0 × 10⁻¹⁴ 6.0 × 10⁻¹³ 8.33 × 10⁻¹³ Correct

Explanation

Kw = Ka × Kb = 1.0 × 10⁻¹⁴ , Kb = (1.0 × 10⁻¹⁴/1.2 × 10⁻²) = 8.33 × 10⁻¹³ .

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