Which of the following is a secondary alcohol?
Correct answer: B. CH3CH(OH)CH3
- A. CH3CH2CH2OH
- B. CH3CH(OH)CH3
- C. (CH3)3COH
- D. CH3OH
Explanation
In propan-2-ol the carbon carrying the hydroxyl group is attached to two other carbons, which is the definition of secondary. Propan-1-ol is primary with one attached carbon, the tertiary butyl compound has three, and methanol has none at all. Classifying the alcohol first is essential, since it determines the oxidation product.
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About Alcohols
Alcohols contain a hydroxyl group attached to a saturated carbon atom and are classified as primary, secondary or tertiary. Their nomenclature, hydrogen bonding, acidity, oxidation, dehydration, reaction with sodium and conversion to haloalkanes are covered, along with the distinction between alcohols and phenols, where the hydroxyl group is attached directly to an aromatic ring.
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