Among the following, the correct order of acidity is :

  • Option 1)

    HClO3 < HClO4 < HClO2 < HClO

  • Option 2)

    HClO < HClO2 < HClO3 < HClO4

  • Option 3)

    HClO2 < HClO < HClO3 < HClO4

  • Option 4)

    HClO4 < HClO2 < HClO < HClO3

 

Answers (1)

As we learned in concept no

Conjugate acid base pair -

If bronsted acid is a strong acid then its conjugate base is a weak base and vice versa.

- wherein

HCl+H_{2}O\rightleftharpoons H_{3}O^{+}+Cl^{-}

Cl- is conjugate base of  HCl  &  H3O+  is conjugate acid of  H2O.

 

 The strength of an acid is directly proportional to the stability of its conjugate base

The stability order of conjugate bases is

ClO^{-}_{4} > ClO^{-}_{3} > ClO^{-}_{2} > ClO^{-}

because of delocalization extent of -ve charge


Option 1)

HClO3 < HClO4 < HClO2 < HClO

This option is incorrect

Option 2)

HClO < HClO2 < HClO3 < HClO4

This option is correct

Option 3)

HClO2 < HClO < HClO3 < HClO4

This option is incorrect

Option 4)

HClO4 < HClO2 < HClO < HClO3

This option is incorrect

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