Question text

Use the following information to answer the next question.

A technician combined 25 mL of 1.0 mol/L HF(aq) with 25 mL of 1.0 mol/L NaF(aq). The following buffer equilibrium was established.

HF(aq)+H2O(l)?H3O+(aq)+F−(aq)

What would limit the buffering action if a sample of a strong acid was added?

Select one:

The amount of fluoride ion present in the system.

The amount of water present in the system.

The amount of hydrofluoric acid present in the system.

The amount of hydronium ion present in the system.

6 years ago

Answered By Naim S

The amount of fluoride ion present in the system is the correct answer as the strong acid added is going to react stoichiometrically with the conjugate base F^1- available.

---