5. If KHP sample #1 requires 19.90 mL of NaOH solution to reach an endpoint, what volume should be required for samples #2 and #3? NaOH volume is required to reach and endpoint roughly 30.15mL per trial due to the amount of acetic acid being the same in each 10.0-mL vinegar samples.

6. If vinegar sample #1 requires 29.05 mL of NaOH solution to reach an endpoint, what volume should be required for samples #2 and #3?

7. A 0.875-g sample of KHP (204.23 g/mol) is dissolved in water and titrated with 20.75 mL of NaOH solution to a permanent endpoint. Refer to Example Exercise 20.1 and calculate the molarity of the NaOH solution.