Acid and Base - Common Ion Effect

Which of these is the weak acid?

• HF

• HCl

• HBr

• HI

What is the common ion effect?

• Shift in equilibrium due to a similar ion between a weak acid and a salt

• polyatomic ions being similar

• when two ions join together.

What is the Buffer Equation (Henderson-Hasselbach)?

• pH=pKa +log[A-/HA]

• pKa=log[Ka]

• pH=-log[H+]

What does pKa indicate?

• Acid strength

• How many mL of acid present

• The -log of [H+]

Which of the following could particpate in the common ion effect with NaF?

• HF

• HCl

• NaOH

A stronger acid will have a...

• Lower pKa

• Higher pKa

• Lower Ka