Acid Base Titration Lab
Name ______________________________________
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Title: Acid Base Titration
Purpose: To practice titration techniques To perform acid-base titrations To determine the molarity and percent composition of acetic acid in commercial vinegar
Materials:
|0.1 M sodium hydroxide |24-well reaction plate |toothpicks |
|phenolphthalein test paper |small beakers |white paper |
|vinegar |graduated pipet | |
|distilled water |10. 0 mL graduated cylinder …show more content…
Use a dropping bottle containing distilled water b. Count number of drops to reach 1.0 mL in the graduated cylinder (Note: Hold bottle vertically to maintain drop size consistency) c. Repeat 4 times and find average # of drops/ 1.0 mL d. Record in Data Table 1 below Titration of Acetic Acid 1. Place 10 mL vinegar in small beaker 2. Draw 1.0 mL into graduated pipet and place in 2nd beaker 3. Add 9.0 mL distilled water to the 1.0 mL vinegar (Note: the concentration of the vinegar is now 0.10 x that of the original vinegar sample!) 4. With graduated pipet, put 1.0 mL of diluted vinegar into wells D1 through D5 of 24-well plate Place the reaction plate on white paper to make it easier to see any changes that occur 5. Cut 2 5-mm pieces of phenolphthalein test paper and add to wells D1—D5 6. Titrate with 0.1 M NaOH a. Hold dropping bottle vertically above well …show more content…
Count drops unit first pink color appears c. Stir with toothpick d. Continue to add drops and stir until the pink color remains (Remember to count the drops!) e. Record the total number of drops in Data Table 1, below f. Repeat the procedure for wells D2—D5 g. Calculate the average number of drops to the titration endpoint 7. Calculate the a. volume of NaOH used to titrate the acetic acid b. molarity of dilute and undiluted vinegar c. molar mass of acetic acid d. mass of acetic acid in 1 L undiluted vinegar e. percent acetic acid in vinegar f. percent error
Results:
|Data Table 1: Calibration and Titration Data
Before you begin, save this Lab Report Template on your computer as LastNameAPChem7
Title: Acid Base Titration
Purpose: To practice titration techniques To perform acid-base titrations To determine the molarity and percent composition of acetic acid in commercial vinegar
Materials:
|0.1 M sodium hydroxide |24-well reaction plate |toothpicks |
|phenolphthalein test paper |small beakers |white paper |
|vinegar |graduated pipet | |
|distilled water |10. 0 mL graduated cylinder …show more content…
Use a dropping bottle containing distilled water b. Count number of drops to reach 1.0 mL in the graduated cylinder (Note: Hold bottle vertically to maintain drop size consistency) c. Repeat 4 times and find average # of drops/ 1.0 mL d. Record in Data Table 1 below Titration of Acetic Acid 1. Place 10 mL vinegar in small beaker 2. Draw 1.0 mL into graduated pipet and place in 2nd beaker 3. Add 9.0 mL distilled water to the 1.0 mL vinegar (Note: the concentration of the vinegar is now 0.10 x that of the original vinegar sample!) 4. With graduated pipet, put 1.0 mL of diluted vinegar into wells D1 through D5 of 24-well plate Place the reaction plate on white paper to make it easier to see any changes that occur 5. Cut 2 5-mm pieces of phenolphthalein test paper and add to wells D1—D5 6. Titrate with 0.1 M NaOH a. Hold dropping bottle vertically above well …show more content…
Count drops unit first pink color appears c. Stir with toothpick d. Continue to add drops and stir until the pink color remains (Remember to count the drops!) e. Record the total number of drops in Data Table 1, below f. Repeat the procedure for wells D2—D5 g. Calculate the average number of drops to the titration endpoint 7. Calculate the a. volume of NaOH used to titrate the acetic acid b. molarity of dilute and undiluted vinegar c. molar mass of acetic acid d. mass of acetic acid in 1 L undiluted vinegar e. percent acetic acid in vinegar f. percent error
Results:
|Data Table 1: Calibration and Titration Data