Question

Explain the decacading order of
acidic strength of following acids
HCLO4>HCLO3>HCLO2​

Answer 1

Answer:

Oxygen is more electronegative than chlorine. With an increase in the number of O atoms attached to Cl, more electrons are pulled away from O−H bond and more weaker becomes the O−H bond. This increases the acid strength.

The decreasing order of acidic strength is HClO

4

>HClO

3

>HClO

2

>HClO.

Answer 2

Answer:

Higher is the oxidation number of non-metal in oxo-acid, more its acidic nature.

HClO<HClO

2

<HClO

3

<HClO

4

+1 +3 +5 +7 (highest oxidation no.)