Solution of NH₄F (Ka NH₄⁺ = 5.6×10⁻¹⁰; Kb F⁻ = 1.4×10⁻¹¹) is

Acidic Ka Kb → cation acid stronger than anion base → slightly acidic.

Weak Acid and Base Equilibria

AP Chemistry· difficulty 4/5

Solution of NH₄F (K_a NH₄⁺ = 5.6\times10⁻¹⁰; K_b F⁻ = 1.4\times10⁻¹¹) is

Explanation

K_a > K_b \to cation acid stronger than anion base \to slightly acidic.

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