An alkene on vigorous oxidation with KMnO4 gives only acetic acid. The alkene is

Question

An alkene on vigorous oxidation with KMnO4 gives only acetic acid. The alkene is (A)  CH3CH2CH=CH2  (B)  CH3CH=CHCH3  (C)  (CH3)2C=CH2  (D)  CH3CH=CH2

Tardigrade Admin · Accepted Answer

Since the alkene on oxidation gives only acetic acid, therefore, the alkene must be symmetrical containing two carbon-atoms on either side of the double bond, ie,

2

-butene

C H_{3} C H = C H C H_{3} KMnO X_{4} 2 C H_{3} COO H

Q. An alkene on vigorous oxidation with $K M n O_{4}$ gives only acetic acid. The alkene is

$C H_{3} C H_{2} C H = C H_{2}$

$C H_{3} C H = C H C H_{3}$

$(C H_{3})_{2} C = C H_{2}$

$C H_{3} C H = C H_{2}$

Since the alkene on oxidation gives only acetic acid, therefore, the alkene must be symmetrical containing two carbon-atoms on either side of the double bond, ie, $2$ -butene
$C H_{3} C H = C H C H_{3} KMnO X_{4} 2 C H_{3} COO H$

Q. An alkene on vigorous oxidation with KMnO4​ gives only acetic acid. The alkene is

CH3​CH2​CH=CH2​

CH3​CH=CHCH3​

(CH3​)2​C=CH2​

CH3​CH=CH2​