The K_a of Hydrofluoric Acid (HF) at 25

question 39

Multiple Choice

The K_a of hydrofluoric acid (HF) at 25.0 °C is 6.8 × 10^{- 4}. What is the pH of a 0.35 M aqueous solution of HF?

• A) 3.6
• B) 3.2
• C) 12
• D) 0.46
• E) 1.8

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Definitions:

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