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KVPY2016Chemistryp Block Elements (Group 15, 16, 17 & 18)

The pK _ a of oxoacids of chlorine in water follows the order

Options

  1. AHClO < HClO ₃ < HClO ₂ < HClO ₄
  2. BHClO ₄ < HClO ₃ < HClO ₂ < HClO
  3. CHClO ₄ < HClO ₂ < HClO ₃ < HClO
  4. DHClO ₂ < HClO < HClO ₃ < HClO ₄

Correct answer

B. HClO ₄ < HClO ₃ < HClO ₂ < HClO

Step-by-step solution

Acidic strength of acid is array l HClO ₄> HClO ₃> HClO ₂> HClO [ H ⁺ ] ka p ^ ka p ^ k _ a order HClO ₄ < HClO ₃ < HClO ₂ < HClO array

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