ProcedureFollow the steps to complete the investigation. Use the lab handout to record the resultsof your investigation.Part A: Preparation1. Label the transparent cup “Reaction vessel.”2. Label the other 3 plastic cups as follows: “Vitamin C stock solution,” “SolutionA,” and “Solution B.”3. Prepare a space to perform your experiment. Iodine can stain and make amess, so wear gloves
Follow the steps to complete the investigation. Use the lab handout to record the results
of your investigation.
Part A: Preparation
1. Label the transparent cup “Reaction vessel.”
2. Label the other 3 plastic cups as follows: “Vitamin C stock solution,” “Solution
A,” and “Solution B.”
3. Prepare a space to perform your experiment. Iodine can stain and make a
mess, so wear gloves, protective safety glasses, and old clothing or an apron if
possible. Prepare the area to contain any spills that may occur and prevent staining
4. When measuring out ingredients, wash the spoon or measuring cup thoroughly
after each use to avoid contaminating your solutions. Thoroughly wash your
disposable plastic cups between each experiment.
Part B: The Unmodified Reaction
Note: The solutions used for this reaction should be as close to the ambient room
temperature as possible.
1. Crush five 1,000 mg vitamin C tablets (or ten 500 mg tablets) by placing them
in a plastic sandwich bag and tapping them with a hammer.
2. Pour 125 mL (1/2 cup) of water into your Vitamin C Stock Solution container.
Dissolve the crushed tablets in the Vitamin C Stock Solution by stirring vigorously
with a measuring spoon, thermometer, etc. This should be enough to use in all of
3. In the cup labeled Solution A, mix together
10 mL (2 teaspoons) of the vitamin C stock solution
2.5 mL (1/2 teaspoon) of the tincture of iodine
60 mL (1/4 cup) of water
4. In the cup labeled Solution B, mix together
15 mL of hydrogen peroxide (3 teaspoons)