1.

(a) Explain the mechanism involved in the conversion of ethanol into ethene.(b) An organic compound with molecular formula C_(6)H_(6)O gives white precipitatewith bromine water. Identify the functional group in the organic compound and write the chemical equation for the reaction.

Answer»

Solution :(a) (1) FORMATION of protonated alcohol `CH_(3)-CH_(2) -OH +overset(+)(H)overset(“fast”)hArrCH_(3) -CH_(2) -overset(+)OH_(2)`
Formation of carbocation
`CH_(3) -CH_(2) -overset(+)OH_(2) overset(“SLOW”) hArrCH_(3) -overset(+)CH_(2) +H_(2) O`
(3) Elimination of PROTON to form ethene
`CH_(3) -overset(+)(CH_(2))hArr CH_(2) =CH_(2) + H^(+)` (b) The organic compound is phenol


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