Redox Titration Using Ascorbic Acid
Vitamin C
Introduction:
The lab consists in determining the vitamin C concentration in a solution by a redox titration using iodine. Vitamin C (ascorbic acid) is a water-soluble, essential oxidant that plays a vital role in the protection of the body from infections and disease it is acquired from primary fruits and vegetables. With the use of different materials as natural orange juice, Tampico (chemical orange juice) and other solutions that contain vitamin C we will find the amount of vitamin C in each of these concentrations with the help of iodine, and with that data we can compare the difference that exist between the solutions and get to a conclusion of how the amount of vitamin C changes in both types of solutions.
Variables: …show more content…
Be careful with pouring too much iodine till the solution turns orange or a dark grey.
3. As you pour the iodine into the flask take note of how much iodine was in the bourete at the beginning and how much of iodine is left until you get the result searched for this experiment. Calculate the volume of iodine solution used by subtracting the ending and beginning volumes. The amount of iodine used will determine the vitamin C content of your solution.
4. Repeat the same process as many times as necessary to collect the enough amount of data collection.
5. Repeat the whole process but with the solution of Tampico (chemical orange juice), collect the data to compare with the results of the orange juice vitamin C.
Raw Data:
Natural orange juice table
10 ml of orange juice + 150 ml of water + 10 ml starch solution
Number of trial Initial volume of iodine (g ± 0.1 g) Final volume of iodine (g ± 0.1 g) Total volume of used iodine
1 0,0 7,7 7,7
2 7,7 14,4 6,7
3 0,0 8,9 8,9
4 8,9 15,3 6,4
5 0,0 6,2 6,2
6 6,2 13
Introduction:
The lab consists in determining the vitamin C concentration in a solution by a redox titration using iodine. Vitamin C (ascorbic acid) is a water-soluble, essential oxidant that plays a vital role in the protection of the body from infections and disease it is acquired from primary fruits and vegetables. With the use of different materials as natural orange juice, Tampico (chemical orange juice) and other solutions that contain vitamin C we will find the amount of vitamin C in each of these concentrations with the help of iodine, and with that data we can compare the difference that exist between the solutions and get to a conclusion of how the amount of vitamin C changes in both types of solutions.
Variables: …show more content…
Be careful with pouring too much iodine till the solution turns orange or a dark grey.
3. As you pour the iodine into the flask take note of how much iodine was in the bourete at the beginning and how much of iodine is left until you get the result searched for this experiment. Calculate the volume of iodine solution used by subtracting the ending and beginning volumes. The amount of iodine used will determine the vitamin C content of your solution.
4. Repeat the same process as many times as necessary to collect the enough amount of data collection.
5. Repeat the whole process but with the solution of Tampico (chemical orange juice), collect the data to compare with the results of the orange juice vitamin C.
Raw Data:
Natural orange juice table
10 ml of orange juice + 150 ml of water + 10 ml starch solution
Number of trial Initial volume of iodine (g ± 0.1 g) Final volume of iodine (g ± 0.1 g) Total volume of used iodine
1 0,0 7,7 7,7
2 7,7 14,4 6,7
3 0,0 8,9 8,9
4 8,9 15,3 6,4
5 0,0 6,2 6,2
6 6,2 13