The K_a of Hydrofluoric Acid (HF)at 25

question 69

Multiple Choice

The K_a of hydrofluoric acid (HF) at 25.0 °C is 6.8 × 10^-4. What is the pH of a 0.45 M aqueous solution of HF?

• A)4.05
• B)1.76
• C)3.64
• D)0.35
• E)1.41

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