Procedure for Vitamin C and Cornstarch Solution Preparation

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Fill Beaker #1 with 16 ounces of water.
Crush the 500 mg vitamin C tablet and pour the pieces into the water. Thoroughly stir to completely allow the vitamin C to dissolve.
From this solution, measure out an ounce and transfer it to Beaker #2. Dispose of the remaining contents of Beaker #1.
Add 4 ounces of water to Beaker #2 and mix thoroughly (the beaker will now contain roughly 31 mg of vitamin C).
In Beaker #3, add 1 teaspoon of cornstarch to 2 tablespoons of water. Thoroughly stir until a consistent texture is reached.
Separately, boil 4 ounces of water and pour into Beaker #4.
Add the contents of Beaker #3 to Beaker #4 and thoroughly stir.
Set aside Beaker #4 to cool.
Once Beaker #4 has reached room temperature, add and thoroughly stir …show more content…

After each drop, stir the solution for 15 seconds.
Record the number of drops it takes to reach a solid blue color (can be written off to the side).
Calculate the amount of iodine droplets required to oxidize 1 mg of vitamin C
In order to do so, divide the number of drops it took to fulfill the blue color by 31, which was the the amount in milligrams of Vitamin C in Beaker #2. For example, if it took 93 drops to reach the blue color, the equation would be (93 / 31 = 3). In terms of this example, it takes 3 drops of iodine to oxidize 1 mg of vitamin C.
Record the number of drops required to oxidize 1 mg of vitamin C.
Procedure 2 (Apple Juice):
Record the amount of apple juice being used (50 mL).
Pour the juice into a beaker and prepare the water bath to 50°C
Place the beaker in the water bath and start the stopwatch
After 180 seconds, remove beaker from the waterbath
In Beaker #5, add 1 ounce of the fruit juice to 4 ounces of water. Thoroughly stir.
Add 1 teaspoon of the contents of Beaker #4 (same solution used in previous procedure) to the Beaker #5 and stir well.
Use the pipette to add iodine, drop by drop, into Beaker #5.
After each drop, stir the solution for 15

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