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KVPY2017ChemistryClassification of Elements and Periodicity in Properties

The reactivity of the following compounds towards water is in the order

Options

  1. ACl ₂ O ₇ < P ₂ O ₅ < B ₂ O ₃
  2. BB ₂ O ₃ < P ₂ O ₅ < Cl ₂ O ₇
  3. CP ₂ O ₅ < B ₂ O ₃ < Cl ₂ O ₇
  4. DB ₂ O ₃ < Cl ₂ O ₇ < P ₂ O ₅

Correct answer

B. B ₂ O ₃ < P ₂ O ₅ < Cl ₂ O ₇

Step-by-step solution

These dissolve in water to form hydroxy acid. Stronger acidic oxide react more faster Acidic strength increase with increase in EN

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