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Explain why perchloric acid is a strong ...

Explain why perchloric acid is a strong acid than sulphuric acid.

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The oxidation state of Cl in perchloric acid is +7 while that of S in sulphuric acid is + 6 .

Due to higher oxidation state and higher electronegativity of `CI, CIO_3` part of `HCIO_4` pulls the electrons of the O-H bond more strongly had hence can break the O-H bond more easily to liberate a proton than `SO_2` part in `H_2 SO_4`. Thus, perchloric acid is a stronger acid than sulphuric acid.
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BETTER CHOICE PUBLICATION-THE P-BLOCK ELEMENTS-QUESTION BANK
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  2. Explain why fluorine forms only one oxoacid, HOF.

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