In an esterification reaction a carboxylic acid, CH3COOH reacted with an acid, BH* to form an intermediate. The intermediate then reacted with an alcohol, C2H5OH to produce an ester, CH3COOC2H5. The rate of the reaction was found to be dependent on the concentration of hydronium ion and CH3COOH. Di dalam tindak balas pengesteran suatu asid karbosilik, CH3COOH bertindak balas dengan asid, BH untuk membentuk satu spesies peralihan. Spesies peralihan kemudiannya bertindak balas dengan alcohol, CzH5OH untuk membentuk ester, CH3COOC2H5. Kadar tindak balas didapati berkadar kepada kepekatan ion hydronium dan CH3COOH.

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Question 1
In an esterification reaction a carboxylic acid, CH3COOH reacted with an acid, BH* to
form an intermediate. The intermediate then reacted with an alcohol, C2H5OH to
produce an ester, CH3COOC2H5. The rate of the reaction was found to be dependent
on the concentration of hydronium ion and CH3COOH.
Di dalam tindak balas pengesteran suatu asid karbosilik, CH3COOH bertindak balas
dengan asid, BH* untuk membentuk satu spesies peralihan. Spesies peralihan
kemudiannya bertindak balas dengan alcohol, C₂H5OH untuk membentuk ester,
CH3COOC2H5. Kadar tindak balas didapati berkadar kepada kepekatan ion hydronium
dan CH3COOH.
a. Write the mechanism for the esterification process.
Tuliskan mekanisma proses pengesteran berkenaan.
b. By giving an appropriate condition with regard to the value of rate constants of
two of the reaction steps, derive the rate equation for the acid catalysed
esterification process.
Dengan menyatakan keadaan yang sesuai berkaitan dengan nilai pemalar
kadar dua daripada langkah tindak balas yang terlibat, terbitkan persamaan
kadar untuk proses pengesteran bermangkin tersebut.
Transcribed Image Text:Question 1 In an esterification reaction a carboxylic acid, CH3COOH reacted with an acid, BH* to form an intermediate. The intermediate then reacted with an alcohol, C2H5OH to produce an ester, CH3COOC2H5. The rate of the reaction was found to be dependent on the concentration of hydronium ion and CH3COOH. Di dalam tindak balas pengesteran suatu asid karbosilik, CH3COOH bertindak balas dengan asid, BH* untuk membentuk satu spesies peralihan. Spesies peralihan kemudiannya bertindak balas dengan alcohol, C₂H5OH untuk membentuk ester, CH3COOC2H5. Kadar tindak balas didapati berkadar kepada kepekatan ion hydronium dan CH3COOH. a. Write the mechanism for the esterification process. Tuliskan mekanisma proses pengesteran berkenaan. b. By giving an appropriate condition with regard to the value of rate constants of two of the reaction steps, derive the rate equation for the acid catalysed esterification process. Dengan menyatakan keadaan yang sesuai berkaitan dengan nilai pemalar kadar dua daripada langkah tindak balas yang terlibat, terbitkan persamaan kadar untuk proses pengesteran bermangkin tersebut.
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