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Four species are listed below: (i) HCO...

Four species are listed below:
(`i`) `HCO_(3)^(-)`
(`ii`) `H_(3)O^(+)`
(`iii`) `HSO_(4)^(-)`
(`iv`) `HSO_(3)F`
Which one of the following is the correct sequence of their acid strength?

A

`ivltiiltiiilti`

B

`iiltiiiltiltiv`

C

`iltiiiltiiltiv`

D

`iiiltiltivltii`

Text Solution

Verified by Experts

The correct Answer is:
C
The `pK_(a)` values of `HCO_(3)^(-), H_(3)O^(+)` and `HSO_(4)^(-)` are `10.25, -1.74` and `1.92` respectively and `HSO_(3)F` is super acid.
`(iv)gt(ii)gt(iii)gt(i)`
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