用比色计研究不同酸性介质中丙酮加碘反应的动力学

IF 0.9 4区数学 Q3 COMPUTER SCIENCE, THEORY & METHODS

Combinatorics, Probability & Computing Pub Date : 2021-05-25 DOI:10.2174/1877946811666210525102725

Nitin Sharma, T. Alam, Ajay Kumar

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引用次数: 0

摘要

本研究旨在用比色计对丙酮在不同酸性介质中碘化的动力学研究。在硫酸、盐酸和乙酸等不同酸存在下，对丙酮碘化进行了动力学实验。通过观察碘在水溶液中棕黄色的消失，确定了丙酮在酸性介质中碘化的速率规律。本研究的目的是制备标准溶液，测定碘溶液在λmax=480nm处的吸光度，以及在不同酸性介质中碘化丙酮的动力学研究。用比色法对该反应进行了动力学分析。通过在适当的时间间隔后测量反应混合物的吸光度来监测反应的程度。速率定律表达式确定为速率=k[〖丙酮〗_0^0.728[酸]0。丙酮在不同酸性介质中的碘化速率为H2SO4＞HCl＞CH3COOH。发现反应速率与碘浓度无关，即相对于碘为零级反应。然而，这取决于丙酮和酸催化剂的浓度。通过使用这种实验技术，化学品的消耗非常少。

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Kinetic Study of Iodination of Propanone in Different Acidic Medium by using Colorimeter

This study aims at the Kinetic Study of Iodination of Propanone in Different Acidic Medium by using Colorimeter. The kinetic experimentation of iodination of propanone has been performed in presence of different acids such as sulphuric acid, hydrochloric acid and acetic acid. The rate law of the iodination of propanone in acidic medium is determined by observing the disappearance of the brownish yellow colour of iodine in aqueous solution. The objective of this study is the preparation of standard solution, determination of absorbance of iodine solution at λmax= 480 nm, Kinetic study of iodination of propanone with different acidic medium. The kinetic analysis of this reaction has been carried out by colorimetry. The extent of the reaction has been monitored by measuring the absorbance of the reaction mixture after a suitable time interval. The rate law expression is determined to be rate = k [〖"propanone]" 〗_0^0.728 [acid]0. The rates of iodination of propanone in presence of different acidic medium are H2SO4 > HCl > CH3COOH. The rate of the reaction is found to be independent of the concentration of iodine i.e. it is zero order reaction with respect to iodine. However, it depends on the concentration of propanone and acid catalyst. By using this experimental technique, the consumption of chemicals is very less.

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来源期刊

Combinatorics, Probability & Computing 数学-计算机：理论方法

CiteScore

2.40

自引率

11.10%

发文量

审稿时长

6-12 weeks

期刊介绍： Published bimonthly, Combinatorics, Probability & Computing is devoted to the three areas of combinatorics, probability theory and theoretical computer science. Topics covered include classical and algebraic graph theory, extremal set theory, matroid theory, probabilistic methods and random combinatorial structures; combinatorial probability and limit theorems for random combinatorial structures; the theory of algorithms (including complexity theory), randomised algorithms, probabilistic analysis of algorithms, computational learning theory and optimisation.