Question

6. Formation of water molecule in esterification reaction is by elimination of
a. -OH group from alcohol and 'H' from carboxylic acid
b. -OH group from carboxylic acid and from alcohol
c. -OH group from carboxylic acid and OH from alcohol
d. 'H' from alcohol and OH' from carboxylic acid.
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Answer 1

Explanation:

Stopped-flow FT-IR spectroscopy has been used to study the amine-catalyzed reactions of benzoyl chloride with either butanol or phenol in dichloromethane at 0 °C. There is a paucity of detailed rate information available in the literature for this process. Our goal was to determine whether amine catalysis operated by a nucleophilic-, specific-base-, or general-base-catalyzed mechanism. A large isotope effect was observed for butanol versus butanol-O-d which is consistent with a general-base-catalyzed mechanism. Some anomalous rate dependencies on reactant concentration and the relative rate of benzoyl chloride loss versus butyl benzoate formation