Prelab for Experiment 29 Vitamin C in Fruit Juice

Name ___________________________

Partner __________________________

1. Which tendency of Vitamin C is key to our ability to analyze for it in this experiment: electron loss or electron gain?

2. What is the chemical name of Vitamin C?

3. What angle of the pipet used to add iodine to Vitamin C yields the most consistent drop sizes (vertically, horizontally, angled)?

4. What color in the solution signals the end of a titration?

5. What volume of juice sample should be used for each analysis?