Question

Explain the acidic strength of halo acids. 

OR 

Write a short note on the acidic strength of hydrogen halides.

Answer 1

• The acidic strength of haloacids vary in the following order, HF < HCl < BHr < HI 
• The stability of hydrogen halides decreases down the group. HF > HCl > HBr > HI. 
• This is because from F to I, atomic size increases and bond dissociation enthalpy of H-X decreases.