Question

The correct statement(s) about the oxoacids, HClO₄ and HClO, is(are) 

(A) HClO₄ is more acidic than HClO because of the resonance stabilization of its anion 

(B) HClO₄ is formed in the reaction between Cl₂ and H₂O 

(C) The central atom in both HClO₄ and HClO is sp³ hybridized 

(D) The conjugate base of HClO₄ is weaker base than H₂O

Answer 1

(A) HClO₄ is more acidic than HClO because of the resonance stabilization of its anion 

(C) The central atom in both HClO₄ and HClO is sp³ hybridized  

(D) The conjugate base of HClO₄ is weaker base than H₂O

Conjugate base of HClO₄ has four canonical structures.

Cl------o^Θ (Conjugate base of HOCl) is not resonance stabilized

⇒ The central atoms Cl in HClO₄ and O in HOCl respectively are sp³ hybridized. 

⇒ HClO₄ is stronger acid than H₃O⁺ , so ClO₄ - is weaker base than H₂O.