1. Acid-Base Titration & pH Chapter 15B
West Valley High School
General Chemistry
Mr. Mata

2. Titration Sample Problem #1
Calculate the concentration (molarity) of an HCl solution determined by titration to which 50 mL of the acid is added to a flask. Indicator is added, and 29.6 mL of M NaOH are required to reach the end point.
MaVa = MbVb -> Ma = MbVb Va
Ma = ? M Va = 50 mL Mb = M Vb = 29.6 mL
Ma = Mb Vb = (0.967 M) (29.6 mL) = 0.57 M
Va mL

3. Titration Sample Problem #2
How much 3.5 M NaOH is required to neutralize 75 mL of 12 M HCl?
MaVa = MbVb -> Vb = MaVa Mb
Ma = 12 M Va = 75 mL Mb = 3.5 M Vb = ? mL
Vb = Ma Va = (12 M) (75 mL) = mL
Mb M

4. Titration Sample Problem #3
An 80 mL sample of KOH was titrated to the endpoint with 39 mL of 6.5 M HCl. What was the molarity of the KOH?
MaVa = MbVb -> Mb = MaVa Vb
Ma = 6.5 M Va = 39 mL Mb = ? M Vb = 80 mL
Mb = Ma Va = (6.5 M) (39 mL) = 3.2 M
Vb mL

5. Titration Sample Problem #4
How much 2.8 M Ca(OH)2 is necessary to titrate 44 mL of 0.75 M H2SO4 solution to the endpoint?
MaVa = MbVb -> Vb = MaVa Mb
Ma = 0.75 M Va = 44 mL Mb = 2.8 M Vb = ? mL
Vb = Ma Va = (0.75 M) (44 mL) = 11.8 mL
Mb M

6. Chapter 15 SUTW Prompt
Describe how titration and indicators are used to find the molarity of unknown solutions.
Complete a sentence paragraph using the SUTW paragraph format. Hilight using green, yellow, and pink.
Due Date: Monday, February 26, 2018 (start of class).