During preparation of ester, the bridge oxygen is from:
Correct answer: A. Alcohol
- A. Alcohol
- B. Acid
- C. Alcohol or acid
- D. Catalyst
Explanation
In the context of ester formation, the term "bridge oxygen" might be referring to the oxygen atom that bridges between the alcohol and the carboxylic acid in the esterification reaction. The bridge oxygen is usually part of the hydroxyl group of the alcohol and the carbonyl group of the carboxylic acid.
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About Alcohols and Phenols
Alcohols are classified as primary, secondary or tertiary and studied through their hydrogen bonding, acidity, oxidation and reactions with active metals, acids and halogenating agents. Phenols require separate treatment because the hydroxyl group is attached to an aromatic ring, making their acidity and electrophilic substitution different from ordinary alcohols.
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