Home
Class 11
CHEMISTRY
S-I: Toluene on Friedel craft's methylat...

S-I: Toluene on Friedel craft's methylation gives o- and p-xylene
S-II: `CH_(3)`-group bonded to benzene ring increase electron density at o- and p- position.

A

S-I & S-II are correct, S-II is corret explanation of S-I

B

S-I & S-II are correct, S-II is not correct explanation of S-I

C

S-I is true but S-II is false

D

S-I is false but S-II is true.

Text Solution

Verified by Experts

The correct Answer is:
A
Methyl group increases the electron density on ortho para positions.
Promotional Banner

Topper's Solved these Questions

Similar Questions

Explore conceptually related problems

Assertion (A) Toluene on Friedal Crafts methylation gives o - and p-xylene. Reason ( R) CH_(3) -group bonded to benzene ring increases density at o - and p- position.

Toluene, when treated with Br_(2)Fe , gives o and p-bromotoluene, because the CH_(3) group-

Identification of +m & -m groups : If the first atom of the group has lone pair or negative charge shows +m effect. +m group increases electron density at ortho and para position of benzene ring. If the group has vacant p- orbital on first atom, also a multipal bonded group in which second atom is more electronegative than the first then it shows -m effect. -m group decreases electron density of ortho and para position of benzene ring. Identify which of following group/s show -m effect when attached with benzene ring.

Identification of +m & -m groups : If the first atom of the group has lone pair or negative charge shows +m effect. +m group increases electron density at ortho and para position of benzene ring. If the group has vacant p- orbital on first atom, also a multipal bonded group in which second atom is more electronegative than the first then it shows -m effect. -m group decreases electron density of ortho and para position of benzene ring. Which of the following compound/s have more electron density than

(A) Toluene undergoes nitration much more readily than benzene. ( R) It is due to electron relesing nature of -CH_(3) group which increases electron relectron density on benzene and electrophilic substitution reaction like nitrotion becomes faster.