8.5 Acid Base Titrations

Multiple Choice

Why is understanding acid-base titrations important in chemistry?

• Because it helps determine the concentration of unknown solutions

• Because it is used only in organic chemistry

• Because it is unrelated to chemical reactions

• Because it is only used in industrial processes

Multiple Choice

What is the purpose of titrations in acid-base chemistry?

• To measure temperature changes

• To analyze acid-base reactions quantitatively

• To determine color changes

• To separate mixtures

Multiple Choice

According to the Henderson-Hasselbalch equation, what does the pH at the midpoint of a weak acid titration tell us?

• The concentration of the base

• The pKa of the weak acid

• The equivalence point

• The concentration of the acid

Multiple Choice

The graph above shows the titration curve that resulted when a sample of 0.1 M monoprotic acid was titrated with a solution of NaOH. Based on the graph, the pKa of the acid is closest to

• 3.0

• 4.0

• 6.0

• 8.0

• 12.0

Multiple Choice

Which of the following statements about titration curves is correct?

• The equivalence point for strong acid-strong base titration is always at pH > 7.

• The equivalence point for weak acid-strong base titration is always at pH < 7.

• The equivalence point for strong acid-strong base titration is at pH = 7.

• The equivalence point for weak acid-strong base titration is at pH = 7.

Open Ended

Explain how the pKa values of a diprotic acid can be determined from its titration curve.

Multiple Choice

Which of the following statements best describes the titration curve of a diprotic acid with a strong base?

• It has two inflection points corresponding to two equivalence points.

• It has only one inflection point.

• It shows a constant pH throughout the titration.

• It does not have any equivalence points.

Open Ended

What questions do you still have about acid-base titrations or their relation to solution properties?