The appearance of cloudiness in the Lucas test for alcohol is due to formation of:
Correct answer: A. Alkyl chloride
- A. Alkyl chloride
- B. Acid chlorides
- C. Aldehydes
- D. Ketones
Explanation
The appearance of cloudiness in the Lucas test for alcohols is due to the formation of alkyl chloride. In the Lucas test, an alcohol is treated with hydrochloric acid (HCl) and zinc chloride (ZnCl2) in anhydrous conditions. Depending on the type of alcohol, different reaction rates occur. Tertiary alcohols react rapidly to form alkyl chlorides, resulting in a cloudy solution due to the insolubility of the alkyl chloride in the aqueous environment. Therefore, option a is correct.
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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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