1. What is the purpose of the starch in the reaction mixture?

2. A student repeats the standardization of iodine as shown in the video. In standardizing the solution of iodine, she places 0.0036 mol of Vitamin C in the flask, which reacts with ________ mol of iodine.

3. In the determination of Vitamin C in orange juice, was all of the squeezed orange juice pour into the flask and titrated?