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Citation: Shuying Zhu, Shuting Wu, Ou Zheng. Improvement and Expansion of the Experiment for Determining the Rate Constant of the Saponification Reaction of Ethyl Acetate[J]. University Chemistry, ;2024, 39(4): 107-113. doi: 10.3866/PKU.DXHX202310117 shu

Improvement and Expansion of the Experiment for Determining the Rate Constant of the Saponification Reaction of Ethyl Acetate

College of Chemistry, Fuzhou University, Fuzhou 350108, China

Corresponding author: Ou Zheng, zhengouou@163.com
Received Date: 31 October 2023
Revised Date: 28 December 2023

This paper focuses on the improvement and expansion of the experiment “Determination of the Rate Constant of Ethyl Acetate Saponification Reaction” in existing Physical Chemistry Experiment textbooks. Firstly, the saponification reaction vessel is replaced with a jacket beaker to ensure the uniform concentration and constant temperature of the solution during the experiment through constant temperature water circulation and magnetic stirring. Secondly, a certain volume of 0.01 mol·L⁻¹ sodium hydroxide solution is taken and the conductivity value is measured after reaching a constant temperature, denoted as κ₀. Then, an equal molar amount of ethyl acetate is added to the reactor using a micro sampler while simultaneously recording the conductivity values at different times, denoted as κ_t. Thirdly, the influence of electrode constant is eliminated through data normalization, providing clear physical quantities and intuitive experimental phenomena. The improved experimental procedure reduces steps and improves the accuracy of data measurement, allowing for the measurement of the rate constant of rapid saponification reactions under high temperature conditions. Within limited class time, students can obtain the apparent activation energy and pre-exponential factor through division of labor, collaboration, and data sharing.
- Physical chemistry experiment,
- Saponification reaction,
- Rate constant,
- Apparent activation energy,
- Pre-exponential factor
1. [1]
2. [2]
3. [3]
4. [4]
5. [5]
6. [6]
7. [7]
  Paredes, R.; Ocampo, R. J. Chem. Educ. 1990, 67 (1), 72.
8. [8]
9. [9]
10. [10]
11. [11]
12. [12]
13. [13]
14. [14]
15. [15]
16. [16]
  , 235–246.
17. [17]
  Atkins, P.; Paula, J. D.; Keeler, J. Atkins PhysicalChemistry Physical Chemistry, 7th ed.; Oxford University: New York, USA, 2002.
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