Given the following information, which of

Question

the following shows the acids in order from
strongest to weakest? The order of atomic
radii is I > Br > Cl, the order of bond
strengths is HOI > HOBr > HOCl, and the
order of electronegativities is Cl > Br > I.

Answer 1

1. HOI > HOBr > HOCl
2. HOCl > HOBr > HOI
3. HOBr > HOCl > HOI
4. None of these
5. HOI > HOCl > HOBr

Answer 2

#2 should be right.
Ka for HOCl = about 3E-8
Ka for HOBr = about 3E-9
Ka for HOI = about 3E-11