Question

Four species are listed below :
i. $HCO_3^-$
ii. H₃O⁺
iii. $HSO_4^-$
iv. HSO₃F
Which one of the following is the correct sequence of their acid strength?
(a) iv < ii < iii < i
(b) ii < iii < i < iv
(c) i < iii < ii < iv
(d) iii < i < iv < ii

Answer 1

b is a answer. .....