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  • Explain why the stability of oxoacids of chlorine increases in the order given below: HClO< HClO_{2}< HClO_{2}< HClO_{4}

Explain why the stability of oxoacids of chlorine increases in the order given below:

HClO< HClO_{2}< HClO_{3}< HClO_{4}

Answers (1)

As number of oxygen atoms around chlorine increases, the electron density moves away from chlorine. It is so because, oxygen atoms are more electronegative than chlorine atoms.
The stability of ions will also increase with a higher number of Oxygen atoms:

ClO^{-}<ClO_{2}^{-}<ClO_{3}^{-}<ClO_{4}^{-}

Thus due to increase in stability of conjugate base, acidic strength of corresponding acid increases in the following order

HClO< HClO_{2}< HClO_{3}< HClO_{4}

 

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