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Most Important Selected Qs for JEE AdvancedChemistryp Block Elements (Group 15, 16, 17 & 18)

The correct statement(s) about the oxoacids, HClO ₄ and HClO , is(are)

Options

  1. AThe conjugate base of HClO ₄ is weaker base than H ₂ O
  2. BThe central atom in both HClO ₄ and HClO is sp ^3 hybridized
  3. CHClO ₄ is formed in the reaction between Cl ₂ and H ₂ O
  4. DHClO ₄ is more acidic than HClO because of the resonance stabilization of its anion

Correct answer

D. HClO ₄ is more acidic than HClO because of the resonance stabilization of its anion

Step-by-step solution

Answer (A, B, D) (A) HClO ₄ H ₂ O Acidic character ClO ₄⁻ OH ⁻ Conjugate Base Strong acids have weak conjugate base (B) Both HClO ₄ and HClO central atom is s p^3 hybridised (D) HClO ₄ HClO Acidic strength aligned & HClO ₄ H ⁺+ ClO ₄⁻ & HClO H ⁺+ ClO ⁻ aligned In ClO ₄⁻ , nagative charge is dispersed on four oxygen, so better resonance stabilised.

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