Titration Lab
Maddie Sanchez 5-13-13 Period 5
I. Title: Titration Lab
II. Purpose: To determine the concentration of an acid or a base exactly by neutralizing the acid or base with an acid or base concentration.
III. Materials: The materials needed are a burette, boat dish, soap, beaker, ring stand, clamp, funnel, phenolphthalein (indicator), scale, 250 mL flask, distilled water, stirrer, acid, and base.
IV. Procedure: This lab was done in two days. On day one the first thing that was done was to clean the burets. At the same time the stock solution needed to be made, which was about four grams of NaOH placed into 200 mL of distilled water. After they were cleaned the titration process could now begin. The burets had to be filled with approximately fifty liters (record the level). Then measure about ten mL of the solution into another beaker (record exact amount). Take the distilled water and add ten mL. Then add three drops of phenolphthalein. Finally, begin titration with the base which is NaOH. Stop titrating when the acid stays pink for five seconds. Next record the amount of NaOH remaining. Lastly determine the concentration of NaOH (MV=MV). The second day began with one gram of an unknown acid. Add 100 mL of distilled water to the gram of unknown acid. Then find the concentration by titrating with the stock solution of NaOH. Lastly repeat these three steps one more time.
V. Data and Observations:
Day One:
Grams of NaOH = 4.01 g (used to make stock solution)
Volume of NaOH
Initial volume of NaOH (i)
50 – 22.2 = 27.8 mL
Final volume of NaOH (f)
50 – 10.6 = 39.4 mL
End volume of NaOH (f – i)
39.4 – 27.8 = 11.6 mL
Day Two:
Trial One:
Grams of acid: .99 g
Volume of NaOH
Initial volume of NaOH (i)
50 – 20.8 = 29.2 mL
Final volume of NaOH (f)
50 – 28.9 = 21.1 mL
End volume of NaOH (f – i)
21.1 – 29.2 = 8.1 mL Trial Two:
Grams of acid: .99 g
Volume of NaOH
Initial volume of NaOH
I. Title: Titration Lab
II. Purpose: To determine the concentration of an acid or a base exactly by neutralizing the acid or base with an acid or base concentration.
III. Materials: The materials needed are a burette, boat dish, soap, beaker, ring stand, clamp, funnel, phenolphthalein (indicator), scale, 250 mL flask, distilled water, stirrer, acid, and base.
IV. Procedure: This lab was done in two days. On day one the first thing that was done was to clean the burets. At the same time the stock solution needed to be made, which was about four grams of NaOH placed into 200 mL of distilled water. After they were cleaned the titration process could now begin. The burets had to be filled with approximately fifty liters (record the level). Then measure about ten mL of the solution into another beaker (record exact amount). Take the distilled water and add ten mL. Then add three drops of phenolphthalein. Finally, begin titration with the base which is NaOH. Stop titrating when the acid stays pink for five seconds. Next record the amount of NaOH remaining. Lastly determine the concentration of NaOH (MV=MV). The second day began with one gram of an unknown acid. Add 100 mL of distilled water to the gram of unknown acid. Then find the concentration by titrating with the stock solution of NaOH. Lastly repeat these three steps one more time.
V. Data and Observations:
Day One:
Grams of NaOH = 4.01 g (used to make stock solution)
Volume of NaOH
Initial volume of NaOH (i)
50 – 22.2 = 27.8 mL
Final volume of NaOH (f)
50 – 10.6 = 39.4 mL
End volume of NaOH (f – i)
39.4 – 27.8 = 11.6 mL
Day Two:
Trial One:
Grams of acid: .99 g
Volume of NaOH
Initial volume of NaOH (i)
50 – 20.8 = 29.2 mL
Final volume of NaOH (f)
50 – 28.9 = 21.1 mL
End volume of NaOH (f – i)
21.1 – 29.2 = 8.1 mL Trial Two:
Grams of acid: .99 g
Volume of NaOH
Initial volume of NaOH