Lab Report on Iodimetric Titration of Vitamin C

The main objective of this report is to determine the amount of vitamin C in natural source as well as synthetic sources.  In this lab report Iodimetric titration is used that also include the redox reaction.

In the lab report, by first standardizing sodium thiosulfate this experiment was carried out as well as 0.01M KIO3 solution is then prepared. By the sodium thiosulfate solution the KIO3, KI, along with H2SO4 were titrated to find the data of standardization of NaS2O3 solution. Determine the vitamin C quantity or amount titrate the solution. By titrating it with triiodide solution it is possible to determine the ascorbic acid or vitamin C. moreover, triiodide solution could be unstable. With a 500mg vitamin tablet is used to make aliquot as well as 50.0mL of H2SO4 0.3M. this aliquot is then used to titrate with sodium thiosulfate.

With iodide instability this alternate procedure mitigates the problem.

Procedure of Iodimetric Titration of Vitamin C

First we have to prepare the sodium thiosulfate. In 500 mL of boil water the prepared sodium thiosulfate solid 8.7g is dissolved in it. In tightly capped bottle the solution was prepared.  In 500mL of volumetric flask by weighing 1 KIO3 0.1M is prepared. Titration was performed to standardize the sodium sulfate solution is prepared.  The titration solution then turned into the pale yellow color. Then further titrate it three times when it is completely turned into yellow than 2mL starch indicator is added in it. And record the three value of it (Marie, 2018).

Calculation of Iodimetric Titration of Vitamin C

Conclusion of Iodimetric Titration of Vitamin C

Reference of Iodimetric Titration of Vitamin C

Marie, A. (2018, september 27). Vitamin C Determination by Iodine Titration. Retrieved from https://www.thoughtco.com/vitamin-c-determination-by-iodine-titration-606322