wiz-icon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

(I) Chlorobenzene (II) 2,4−dinitrochlorobenzene (III) p−nitrochlorobenzene

The decreasing order of their reactivities towards electrophilic substitution reaction is:

A
(I)>(II)>(III)
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
(I)>(III)>(II)
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
C
(II)>(I)>(III)
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
(III)>(I)>(II)
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is B (I)>(III)>(II)
The above given compounds are all benzene derivatives,
Electrophilic substitution reaction depends on the electron density of the ring and substituents present on the ring.
More the Electron withdrawing groups (deactivating groups) on the ring less reactive it is towards electrophilic substitution.
In Chlorobenzene Cl is the only deactivating group present, whereas for pnitrochlorobenzene there are two deactivating groups present and in 2,4dinitrochlorobenzene there are three deactivating groups present so it undergoes electrophilic substitution reactions with lesser rate when compared with I & III.
Thus, the rate of electrophilic substitution reaction is:
I>III>II

flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Aromatic Compounds - Chemical Properties
CHEMISTRY
Watch in App
Join BYJU'S Learning Program
CrossIcon