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LoginA compound [A] with molecular formula `C_(4)H_(10)O` reacts rapidly with metallic sodium but very slowly with Lucas reagent. When [A] treated with hot concentrated `H_(2)SO_(4)`, it gives a compound [B] `C_(4)H_(8)` which upon hydration with aqueous `H_(2)SO_(4)` forms a compound [C] with molecular formula `C_(4)H_(10)O`. The compound [C] is almost unert to metallic sodium but reacts rapidly with Lucas reagent. What are the compounds [A], [B] and [C] ? Explain the reaction involved.
General Awareness ALCOHOLS-AND-PHENOLS IN GENERAL AWARENESS 2 years ago
(ii) The molecular formula `C_(4)H_(10)O` suggests alcohol to be tertiary nutyl alcohol i.e. `(CH_(3))_(3)COH`. Since [C] has been formed by the hydration of compound [B] which is an alkene, the compound [B] is therefore, `(CH_(3))_(2)C=CH_(2)`.
(iii) The compound [B] has been formed from [A], as a result of dehydration with concentrated `H_(2)SO_(4)`. since compound [A] reacts rapidly with metallic sodium but very slowly with Lucas reagent, it is a primary alcohol with the formula `(CH_(3))_(2)CHCH_(2)OH`.
The series of reactions involved are as follows :
`underset(("Isobutyl alcohol "(C_(4)H_(10)O)),([A]))((CH_(3))_(2)CHCH_(2)OH) underset("Heat")overset(H_(2)SO_(4)" (conc.)")(rarr) underset(("Isobutylene "(C_(4)H_(8))),([B]))((CH_(3))_(2)C=CH_(2)) overset(H_(2)O //H^(+))(rarr) underset(("Tert. butyl alcohol "(C_(4)H_(10)O)),([C]))((CH_(3))_(3)COH)`
Posted on 06 Oct 2022, this text provides information on General Awareness related to ALCOHOLS-AND-PHENOLS IN GENERAL AWARENESS. Please note that while accuracy is prioritized, the data presented might not be entirely correct or up-to-date. This information is offered for general knowledge and informational purposes only, and should not be considered as a substitute for professional advice.
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