Kinetic Estimation of D-Sorbitol using Redox indicator reaction with Cerium (IV) in Sulphuric Acid Medium.

Publication Date : 27/02/2016


Author(s) :

Anand G.Fadnis.


Volume/Issue :
Volume 2
,
Issue 2
(02 - 2016)



Abstract :

Kinetic estimations of D-sorbitol and with cerium (IV) in sulphuric Acid Medium has been carried out after elaborating the kinetic and mechanistic features of this redox indicator reactions which can be expressed as C6H14O6 + 2 Ce(IV) +H2O → C6 H12 O6+ 2Ce(III)+2H + + HCOOH These reactions showed first order kinetics with respect to initial concentarations of reacting species cerium(IV), sorbitol and sulphuric acid under the experimental pseudo first order conditions.and a free radical mechanism producing D-glucose as initial reaction product. The observed decreasing absorbance with time at different initial concentrations of respective hexitols has been used for the .kinetic estimations adopting (a) Rate constant, (b) variation of absorbance at fixed time (c) variation of time at fixed absorbance of (d) One point and (e) Two point methods using respective calibration plots .The consistency and reproducibility of these results have clearly showed these kinetic estimations of sorbitol can be used as an alternative/additional analytical method to the existing traditional estimation methods in the present day laboratory conditions and also as advance laboratory experiments/student’s projects.


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