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Physical Properties of Alkenes

1-bromo butan...

Question

1-bromo butane on reaction with alcoholic KOH gives:

A

1-Butene

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B

1-Butanol

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C

2-Butene

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D

2-Butanol

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Solution

The correct option is A 1-Butene
Reaction:
$C H_{2} B r - C H_{2} - C H_{2} - C H_{3} A l c . K O H - ----- \to C H_{2} = C H - C H_{2} - C H_{3}$

When 1-bromo butane reacts in the presence of alcoholic KOH, then it undergoes dehydrohalogenation to form 1-Butene as a product.

So, the correct option is $A$

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