Buffer Solutions

What is the purpose of a titration in the context of this experiment?

• To increase the pH of the solution

• To create a buffer solution

• To measure the buffering capacity

• To heat the solution

A solution that is resistant to large changes in pH.

• salt

• pH

• buffer

• electrolyte

Mixtures that can react with acids or bases to keep the pH within a particular range.

• pH scale

• Bases

• Acids

• Buffer

These solutions resist changes in pH when acids/bases are added:

• neutral

• litmus

• buffers

• salt

Imagine that you complete a difficult workout and your blood pH becomes more acidic because of an increase in CO₂ and H⁺. How will your blood buffer system counteract this?

• parts of the buffer system will release more H⁺

• parts of the buffer system will bind with the extra H⁺

Tags

NGSS.HS-LS1-3

The initial pH values of Beaker A and Beaker B are recorded to be 7.0. You add 1.0 mL of a strong acid to both beakers. The final pH value of Beaker A is 3.0. The final pH value of Beaker B is 6.9. Which beaker contains a buffer?

• Beaker A

• Beaker B

What is the primary function of a buffer solution in a chemical system?

• To maintain a constant temperature

• To resist changes in pH

• To increase the solubility of salts

• To act as a catalyst

Which of the following is a common component of a buffer solution?

• Strong acid and strong base

• Weak acid and its conjugate base

• Strong acid and its conjugate base

• Weak base and strong acid

In a laboratory experiment, a buffer solution is prepared using acetic acid and sodium acetate. What is the role of sodium acetate in this buffer?

• It acts as a strong acid

• It acts as a weak base

• It acts as a conjugate base

• It acts as a strong base

How does a buffer solution respond when a small amount of hydrochloric acid is added?

• The pH increases significantly

• The pH decreases significantly

• The pH remains relatively stable

• The solution becomes neutral