Vitamin C Lab

Basically today we learned that Vitamin C is a essential nutrient: we need it to survive. Vitamin C is most commonly found in citrus fruits, but also in various vegetables. Lack of vitamin C can cause disease such as scurvy. Yarr.
     In this lab we worked on comparing the vitamin C concentration of different juices to  a 1mg/mL standard solution. To do this we added starch to 20 drops of each juice, then added a couple drops of iodine. This reaction will make a clear liquid. However, if you continue to add iodine after all the vitamin c has reacted, the solution will turn blue. More trials to do tomorrow.