1.

An organic compound A of molecular formula C_3 H_6 react with HBr in the presence of peroxide to give C_3H_7Bras B. B on reaction with aqueous KOH given C with molecular formula C_3H_8O. Identify A, B and C.

Answer»

Solution :(i) An organic compound A of molecular formula `C_3H_6` is ` CH_3 - CH = CH_2`, propene
(ii) Propene A REACTS with HBr in the presence of peroxide to give 1-bromopropane `CH_3-CH_2 -CH_2Br` as B.
`{:(CH_3 - CH = CH_2 + HBr underset("Atimarkovnikoff.s")overset("Peroxide")toCH_3- CH_2 - CH_2Br),("RULE""1-bromopropane R"):}`
(iii) 1 - Bromopropane on reaction with aqueous KOH undergoes hydrolysis to give Propan - 1- ol, `CH_3- CH_2 - CH_2OH` as C.
`CH_3 - CH_2 -CH_2 Br + KOH(AQ.) to underset("Propan- 1-ol C")(CH_3 - CH_2CH_2 OH) + KBR`


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