CameraIcon
CameraIcon
SearchIcon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

The correct order of thermal stability of halogen halides is:

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

The correct option is A HF>HCl>HBr>HI
On moving down the group, the bond dissociation enthalpy (ΔdissH) of HX bond (where X=F,Cl,Br,I) decreases and hence thermal stability also decreases. Therefore, the correct order of thermal stability of hydrogen halides is:
HF>HCl>HBr>HI
Molecule ΔdissH
(in kJ/mol)
HF 574
HCl 432
HBr 363
HI 295

flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Hydrogen Bond
CHEMISTRY
Watch in App
Join BYJU'S Learning Program
CrossIcon