The IUPAC name of isopropyl alcohol is:
Correct answer: B. 2-propanol
- A. 1-butanol
- B. 2-propanol
- C. 1-propanol
- D. 2-butanol
- E. propanol
Explanation
The correct IUPAC name for isopropyl alcohol is propan-2-ol. This name reflects the structure of the molecule: a three-carbon chain (propane) with a hydroxyl group (-OH) attached to the second carbon atom. The prefix 'iso-' in isopropyl indicates the branching at the second carbon, which aligns with the IUPAC naming as 'propan-2-ol'.Option A (1-butanol) and Option D (2-butanol) are incorrect because they describe four-carbon alcohols, not three. Option C (1-propanol) is incorrect because the hydroxyl group is on the first carbon, not the second. Option E (propanol) is too vague as it doesn't specify the position of the hydroxyl group.
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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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