Which of the following alcohols on reaction with K2Cr2O7 I H2SO4 will give an alkene?
Correct answer: C. CH3|CH3 - CH2 - C - OH|CH3
- A. CH2 - CH2 - OH
- B. OH|CH3 - CH - CH3
- C. CH3|CH3 - CH2 - C - OH|CH3
Explanation
Tertiary alcohols do not undergo oxidation with potassium dichromate and sulfuric acid to form alkenes. Tertiary alcohols are resistant to oxidation because they lack a hydrogen atom attached to the carbon bearing the hydroxyl group, which is necessary for the oxidation reaction to occur.
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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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