Hydrofluoric Acid, HF, Is a Weak Acid

question 192

Multiple Choice

Hydrofluoric acid, HF, is a weak acid. Which of the following is the correct expression for the K_a of hydrofluoric acid?

• A) [H₃O⁺][HF]/[F⁻]
• B) [HF]/[ H₃O⁺][F⁻]
• C) [H₃O⁺][F⁻]/[HF]
• D) [HF][F⁻]/[ H₃O⁺]

---

Definitions:

Historic Buildings

Structures that hold historical significance due to their architecture, association with important events, or cultural impact.

External Costs

Costs of economic activities that are not reflected in the market price, affecting parties who did not choose to incur that cost.

Supply Curve

A graphical representation of the relationship between the price of a good or service and the quantity supplied for a given period.

Aluminum Production

The industrial process of extracting aluminum from its oxide, alumina, typically through the Hall-Héroult process.