Individual science project on the analysis of vitamin C tablets
Member rating: No Rating | Words: | Submitted: Sun Mar 11 2007
On the left is an image preview of every page of this document, and below are the first 150 words with formatting removed:
Individual science project on the analysis of vitamin C tablets Aim The aim of this experiment is that to find out, out of the four vitamin C brand which I have bourth one has the most vitamin C and to see which brand is the most value for money. Introduction In this experiment I will analyze the active ingredient is "incorporated" in a variety of fillers, most often starch or sugar. In this exercise, the student groups analyze the vitamin content of a Vitamin C tablet and calculate the percentage of ascorbic acid present, H2C6H6O6, in the tablet. Ascorbic acid has two ionisable hydrogen but the second one comes off only at a pH of 10 or 11. The reaction of ascorbic acid with sodium hydroxide will produce the acid salt, sodium hydrogen ascorbate, and not the normal salt when titrated using an indicator like phenolphthalein and Universal indicator. I will...

