Vitamin C lab

I liked the Vitamin C lab because we got to work at our own pace and I didn't feel rushed to get the lab done. The slower pace helped me understand the procedure better and helped me understand the concept of titrations better. Our task was to test 4 different vegetable and fruit juices to figure out the vitamin C concentration in each. To do so,  we added starch to a small sample of each juice so when we dropped Iodine into the solution, the Iodine would react with the Vitamin C and when all the Vitamin C was used up, the solution would turn dark blue when the Iodine is dropped. When the Iodine reacts with the Vitamin C, it produces a clear liquid. When all the Vitamin C is used up in the reaction, the Iodine begins to react with the starch instead. The reaction between the starch and Iodine creates the dark blue solution, which indicates that the Vitamin C has been used up. We tested the different juices and compared to a standard solution to figure out the concentrations.