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COMEDK2024Chemistryp Block Elements (Group 15, 16, 17 & 18)

Given are the following molecules. H ₃ PO ₂, H ₃ PO ₃, H ₃ PO ₄, H ₄ P ₂ O ₇ Which of the above oxoacids results into two series of salt?

Options

  1. AH ₃ PO ₂
  2. BH ₃ PO ₃
  3. CH ₃ PO ₄^
  4. DH ₄ P ₂ O ₇

Correct answer

B. H ₃ PO ₃

Step-by-step solution

Phosphorous acid ( H ₃ PO ₃ ) is a diprotic acid. It form two series of salt such as NaH ₂ PO ₃ and Na ₂ HPO ₃ but, none of the type Na ₂ PO ₃ with NaOH . Structure of H ₃ PO ₃

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