Titrations

What is the equivalence point of a titration?

• When the mL of acid = the mL of base
• When the moles of acid = the moles of base
• When the mL of H+ = the mL of OH- (or other base)
• When the moles of H+ = the moles of OH- (or other base)

The pH at the equivalence point of strong acid/strong base titration is always 7.

• True
• False

The pH at the equivalence point of weak acid/strong base titration is always less than 7.

• True
• False

Why is the pH at the equivalence point of weak acid/strong base titration always greater than 7?

• The acid is weaker than the base.
• The weak acid's conjugate base and the strong base both affect pH.
• The weak acid dissociates into pumpkin spice lattes, which are very basic.
• OH- from a strong base affects the pH more than H+ from a weak acid.

Initial pH for a 0.10 M weak acid/strong base titration will be _________ than that of a 0.10 M strong acid/strong base.

• Higher
• Lower
• The same

The buffer region of a weak acid/strong base titration occurs...

• Before the equivalence point
• After the equivalence point
• At the equivalence point

What is the pH at the midpoint of the buffer region for this titration?

• 3

• 5

• 7

• 9

What is the pKa of the weak acid in this titration?

• 3

• 5

• 8.72

• 12.5