IOSR Journal of Applied Chemistry (IOSR-JAC) e-ISSN: 2278-5736.Volume 13, Issue 9 Ser. I (September. 2020), PP 18-22 www.iosrjournals.org DOI: 10.9790/5736-1309011822 www.iosrjournals.org 18 |Page Kinetics and Mechanism for the quantitative determination of Acetoacetic ester with N-chlorosaccharin reagent in acetic acid water medium Sushil Kumar 1 and R.P. S. Chauhan 1,* 1 (PG Department of Chemistry, Magadh University, Bodh Gaya, Bihar 824234) Abstract: The current study gives a kinetics study for the quantitative determination of Acetoacetic ester with N-chlorosaccharin reagent in acetic acid water medium. A perusal of the proceeding result confirms that the activity of N-Chlorosaccharin is very much limited. This is due to the restricted activity on ketones and esters in ordinary medium of solvent. At the same time, it is also concluded that the presence of acid does increase the activity at relatively higher temperature. Even then this study certainly a worthy contribution to the field of chemical kinetics by opening a new field with NCSA. Background: Chemical kinetics also described as reaction kinetics, is the study of rates of chemical processes. It deals with the investigations of how different experimental conditions may produce an effect on the speed of a chemical reaction and yield information about the reaction's mechanism and transition states, as well as the construction of mathematical models that can describe the characteristics of a chemical reaction. The Mechanism of the reaction Acetoacetic ester with N-chlorosaccharin reagent in acetic acid water medium has been a vital problem to study and is in focus from last two decades.It has also been highlighted by German Chemist Ludwig-Ferdinand Wilhelmy from his work. Materials and Methods: For the kinetic study of oxidation of ethylacetoacetate, diketones and esters i.e. benzoyl acetone, malonic ester, acetyl acetone, by N–Chlorosaccharin. serieThe samples of acetyl acetone (K. light AR) and benzoyl acetone (Emerck) used in this kinetic study with standard grade. The ethyl aceto acetate was used of Emerck grade whereas the malonic ester was used of VEB grade. Other chemical such as acetic acid used BDH grade, potassium iodide is used of BDH grade. The sulphuric acid is used of BDH grade. The sodium thiosulphate (hypo) is used of (BDH) grade. Results: Relationship between the reaction rate and solvent polarity are described here in detail. The composition of acetic acid water binary mixture has been changed to record the dependence of solvent polarity on the rate of reaction and kinetic data are recorded. From the table it is found that the reaction rate of oxidation process decreases with the increase in the composition of acetic acid. The decrease in reaction rate is probably due to that ethyl aceto acetate/diketone molecule is more stabilized in solution containing large percentage of water than the small percentage of water due to formation of intra molecular hydrogen bond. It is reported 6,7 that extent of enolization is greatly affected by solvent concentration and temperature. Enol is involved in the rate determining step. Conclusion: The current study gives a kinetics study for the quantitative determination of Acetoacetic ester with N-chlorosaccharin reagent in acetic acid water medium. A perusal of the proceeding result confirms that the activity of N-Chlorosaccharin is very much limited. This is due to the restricted activity on ketones and esters in ordinary medium of solvent. At the same time, it is also concluded that the presence of acid does increase the activity at relatively higher temperature. Even then this study certainly a worthy contribution to the field of chemical kinetics by opening a new field with NCSA. Key Word: Kinetics Study, Acetoacetic ester, N-chlorosaccharin reagent, Acetic acid --------------------------------------------------------------------------------------------------------------------------------------- Date of Submission: 29-08-2020 Date of Acceptance: 14-09-2020 --------------------------------------------------------------------------------------------------------------------------------------- I. Introduction Chemical kinetics also described as reaction kinetics, is the study of rates of chemical processes. It deals with the investigations of how different experimental conditions may produce an effect on the speed of a chemical reaction and yield information about the reaction's mechanism and transition states, as well as the construction of mathematical models that can describe the characteristics of a chemical reaction. The Mechanism of the reaction Acetoacetic ester with N-chlorosaccharin reagent in acetic acid water medium has been a vital problem to study and is in focus from last two decades. 1 It has also been highlighted by German Chemist Ludwig-Ferdinand Wilhelmy from his work. 2