How can you know the fruit that contains the most vitamin c?
Posted by admin on Oct 22, 2009
Please type the preparation to know how can you get the most vitamin c from a fruit. I need this for my chemistry investigatory project that is entitled "What fruit contains the most vitamin c?" Thanks a lot.
Actually, you need to do what is called an iodometric titration. Essentially, this is how it works: When you combine iodine and starch (I use cornstarch), it reacts to form a purple color. However, when Vitamin C is present, the purple color will not appear. So you keep adding the iodine solution until the purple DOES appear, indicating that all of the Vitamin C has been "used up." I teach high school, and I have my kids do this every year. I do not have the exact "recipe" for the iodine solution here at home, however, you can surely search IODOMETRIC TITRATION, and find it.
