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Asian Journal of Pharmaceutical Analysis
ISSN: 2231-5675(Online), 2231-5667(Print)
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Comparative Study of Kinetics of Saponification of Ethyl Acetate by pH Method and Titration Method
Ulhas Balkrishna Hadkar
Asavari Sameer Hadkar
Ulhas Balkrishna Hadkar1*, Asavari Sameer Hadkar2
1Director/Professor, Mumbai Educational Trust Institute of Pharmacy, Bandra (West), Mumbai – 400050.
2Research Assistant, Mumbai Educational Trust Institute of Pharmacy, Bandra (West), Mumbai – 400050.
The hydrolysis of ethyl acetate in presence of NaOH has been studied by pH method and by titration method. In the pH method the pH of the reaction mixture was recorded at various time intervals and the data was used to calculate the specific reaction rate constant of the reaction at room temperature (28oC). In the pH method,“alkaline error” correction was used to get the “true pH” of the reaction mixture and was used to calculate the specific reaction rate constant.In the titration method excess acetic acid was used to arrest the reaction. The pH method gave more reliable value of specific reaction rate constant of saponification of ethyl acetate than the titration method.
Saponification, Specific reaction rate constant, pH method, titration method, alkaline error, glass combination pH electrode.
Ulhas Balkrishna Hadkar, Asavari Sameer Hadkar. Comparative Study of Kinetics of Saponification of Ethyl Acetate by pH Method and Titration Method. Asian J. Pharm. Ana. 2018; 8(1):20-24.
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