Matt HathawayDishan AbeydeeraJake HarringtonJeremy Vargas

1.What are some uses for Vitamin C?-Good Health, prevention of scurvy, transfer electrons

2.What is the chemical formula for Vitamin C?-C6H8O2

3.During the titration, vitamin C will be oxidized by iodine, Write the chemical equation

for this equation for this reaction?

-C6H8O2 + I2 C6H8O6 + 2I- + 2H+

4. Draw the structure for Vitamin C and the oxidized version of Vitamin C.

How will the concentration of vitamin C differ between different brands of orange juice?

If there is more vitamin C present inside of the various orange juice samples then the solution of orange juice will therefore titrate at an exponential rate when reacting with iodine.

-Erlenmeyer Flask-Tropicana Orange Juice-Simply Orange-Minute Maid Orange

Juice-Iodine-Buret-Starch Solution-Pipet-Electronic Scale

-Orange Soda

1.Fill the Erlenmeyer flash with 50mL of the Tropicana Orange Juice.

2. Add 20 or more drops of the starch solution.3.Slowly dispense the iodine solution into the Erlenmeyer

flask until the starch completely changes color to a dark purple. Record the initial and final volume of the buret of iodine.

4.Repeat steps 1-3 substituting the various orange juices at your disposal.

Trials Amount of Juice Initial Volume Final Volume

Tropicana 1 50mL/6O mg 1.3mL 23.5mL

Minute Maid 1 50mL/6O mg 23.5mL 41.7mL

Simply Orange 1 50mL/6O mg 41.7ml1mL

50mL5mL

Orange Soda 1 50mL/6O mg 5mL 7.9mL

Tropicana 2 50mL/6O mg 7.9mL 26mL

Minute Maid 2 50mL/6O mg 26mL 45.9mL

Simply Orange 2 50mL/6O mg 1/4mL 13.5mL

Orange Soda 2 50mL/6O mg 13.5mL 14.5mL

Juice Trial Vitamin C

Tropicana 1 .162 mg

Minute Maid 1 .198mg

Simply Orange 1 .294mg

Tropicana 2 .198mg

Minute Maid 2 .180mg

Simply Orange 2 .271mg

Excess IodineCracked and/or damaged glass wear Insufficient JuiceDid not Dilute Juice

1.Check all glass wear for any visible sign of corruption.

2. Make sure safety goggles are operational

3. Dilute the Juice

Juice Required mL Servings

Tropicana 1 462mL 2

Minute Maid 1 378mL 1.63

Simply Orange 1 255mL 1.09

Tropicana 2 378mL 1.6

Minute Maid 2 416mL 1.8

Simply Orange 2 276mL 1.2

Based on our experimental data we can conclude that the more natural orange juice is DIRECTLY proportional to the amount of vitamin C. Therefore our experimental data sufficiently supports our hypothesis.