Butan − 2 − ol + HBr [ (H_2SO_4 + NaBr) ] Reflux (X). What is (X)? [MHT-CET 2005]

MHT CET Chemistry question

Butan − 2 − ol + HBr (X). What is (X)? [MHT-CET 2005]

(A)Bromobutane
(B)1-bromo butane
(C)but-2-ene
(D)2-bromo butaneCorrect

Answer: (D)

Solution

HBr (generated from NaBr and ) replaces the –OH of the secondary alcohol by Br without shifting its position, giving 2-bromobutane; 1-bromobutane would need

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Question ID VK-079172