1.

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 ?

Answer»

`IV LT ii lt III lt i`
`ii lt iii lt I lt iv`
`I lt iii lt ii lt iv`
`iii lt I lt iv lt ii`

Solution :The correct order of acidic strength of the given species is
`underset(iv)(HSO_(3)F) gt underset(ii)(H_(3)O^(+)) gt underset(iii)(HSO_(4)^(-)) gt underset(i)(HCO_(3)^(-))`
or `(i) lt (iii) lt (ii) lt (iv)`
It corresponds to choice(c) which is correct answer


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