1-Propanol reacts with HCl in the presence of ZnCl₂ _?
Correct answer: B. On heating
- A. None of these
- B. On heating
- C. Immediately
- D. After 5-10 minutes
Explanation
This is the reaction indicating Lucas Test which uses Lucas Reagent(ZnCl2+conc.HCl).Since 1-Propanol is a primary alcohol, it reacts with HCl in the presence of ZnCl₂ on heating, because it needs high energy to undergo the reaction, and results in formation of an insoluble primary alkyl chloride.
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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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