1.

Which of following in the strongest acid ?

Answer»

`ClO_(3)(OH)`
`ClO_(2)(OH)`
`SO(OH)_(2)`
`SO_(2)(OH)_(2)`

Solution :`CIO_3(OH) or HCIO_4`, is the known strongest acid, Acid STRENGTH depends upon the oxidation state and the ELECTRONEGATIVITY of the central atom. In `ClO_3(OH),` the chlorins atom is in its highest oxidation state. `CIO_3(OH)` is stronger acid than `SO_2(OH)_2`, because Cl is in HIGHER oxidation state (+7) and also chlorine is more electronegative than sulphur.


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