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

Choose the correct increasing order of reactivity of alkyl halides with zinc and dilute HCl.

A
RCl<RI<RBr
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
RCl<RBr<RI
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
C
RI<RBr<RCl
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
RBr<RI<RCl
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is B RCl<RBr<RI
In this reaction alkyl halide get reduced to alkane by cleavage of CX.
CH3X+H2Zn, dil.HClRH+HX
As the size of the halogen increases down the group, the strength of CX bond decreases. Also the stability of X formed in the reaction is higher for I due to its larger size. Thus, the reactivity of alkyl halide increases down the group. Therefore, the increasing order of reactivity of alkyl halides with zinc and dil. HCl is RCl<RBr<RI.
Hence, B is the correct answer.

flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
Join BYJU'S Learning Program
CrossIcon