Understanding pKa and Buffers

The action and properties of buffers include: A) Neutralizing acids B) Changing colors C) Exploding D) Freezing.

• Neutralizing acids

• Changing colors

• Exploding

• Freezing

Fill in the blank: When acids and bases mix, they form ____.

• Salt and water

• Sugar and water

• Oil and water

• Vinegar and water

Fill in the blank: Bases turn red litmus paper ____.

• Blue

• Green

• Yellow

• Orange

At 25°C, what is the value of K_w for water?

• 10⁻¹²

• 10⁻¹³

• 10⁻¹⁴

• 10⁻¹⁵

Which of the following acids dissociates into Cl- and H+?

• HCl

• CH3COOH

• H2SO4

• HNO3

What type of acid is CH3COOH considered?

• Weak acid

• Strong acid

• Neutral

• Base