Vitamins and Minerals - Experiment 1 - Vitamin C: What juices are the best sources of Vitamin C?
Experiment 1
Vitamin C: What juices are the best sources of Vitamin C?
Purpose/Hypothesis
Vitamin C is a water-soluble vitamin that is essential for human growth and health. In this experiment, you will explore the relative quantity of Vitamin C in different juices. To measure the amount of Vitamin C you will observe the chemical reaction of Vitamin C with iodine.
Iodine mixed with water forms ions, which are charged particles. When ions mix with starch they produce a compound that has a blue color. Ascorbic acid, or Vitamin C, breaks up the bond between the ions and the starch, reversing the color change. The more Vitamin C in a substance, the quicker the bonds will be broken, and the faster the liquid will turn clear.
You will test the Vitamin C content of orange, grapefruit, and apple juice. Make sure all the juices are fresh—not from concentrate. You can...
[The entire page is 1271 words long]
Join eNotes
Over 3,500 study guides, question and answer forums, literature criticism, reference content, and much more!
Navigate
