Write the correct order of increasing acid strength among `HCO_(3)^(-),H_(3)O^(-),HSO_(4)^(-),HSO_(3)F`.

Explanation

`HSO_(3)F` is a super acid. So, its strength is maximum among all the given acids. Comparing the dissociation constants of the remaining acids gives the order in terms of dissociation constant: `K_(a)(H_(3)O)^(+) gt K_(a)(HSO_(4)^(-))gtK_(a)(HCO_(3)^(-)).` Now, the larger the value of `K_(a)` for an acid, the higher is the strength of the acid, so, the increasing order of acid strengths of the given acids will be: `HCO_(3)^(-) lt HSO_(4)^(-) lt H_(3)O^(+) lt HSO_(3)F`.