The amount of vitamin C in the juice from different citrus fruits such as oranges and lemons can be compared in this fun and analytical wet experiment. There are actually three different procedures described; two use a starch-iodine indicator and one uses indophenol. All materials, procedures, and result tables are provided and the science behind the titrations is completely explained.
When students finish they can work on the provided student activity worksheet, answer key included. There is also a page of document camera notes and images on the vitamin C molecule. Simply print and use. Ideas for extension experiments are included.
PS. Students will enjoy squeezing their own fruit juices!
You might also check out:
Measuring Carbon Dioxide
Analysis of Antacids
The Blue Pennies and Malachite
Copyright © DrDavesScience. All rights reserved by author, including copyrighted images. This product is strictly for individual use, so please do not copy for other teachers and the file itself may not be forwarded to other individuals unless you are buying multiple copies (at a 50% discount!). Please do not violate copyright laws and instead direct others to this online store at TPT. The file may not be edited or modified in any way. The file may not be uploaded on any digital platform or any online file sharing service (including Google Docs, unless multiple copies have been purchased). DrDavesScience