Q. The correct order of acidity of halogenic acids is
A) HF<HCl<HBr<HI
B) HI<HBr<HCl<HF
C) HI<HCl<HBr<HF
D) HF<HBr<HI<HCl
Explanation
(a)
The correct order of acidity strength of halogen acids is HF<HCl<HBr<HI
This is due to the reason that as the size of halogen increases H—X bond becomes weaker and thus, H—X easily donate proton. Hence, HI is the strongest acid and HF is the weakest acid.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.