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AP EAMCET2013Chemistryp Block Elements (Group 15, 16, 17 & 18)

Which one of the following is not correct?

Options

  1. APyrophosphoric acid is a tetrabasic acid
  2. BPyrophosphoric acid contains P - O - P linkage
  3. CPyrophosphoric acid contains two P - H bonds
  4. DOrthophosphoric acid can be prepared by dissolving P ₄ O ₁₀ in water

Correct answer

C. Pyrophosphoric acid contains two P - H bonds

Step-by-step solution

In pyrophosphoric acid ( H ₄ P ₂ O ₇ ) , the phosphorus is bonded in tetrahedral manner with four s p^3 bonds. It has +5 oxidation state and it has four P - OH bonds, two P = O bonds and one P - O - P linkage. pyrophosphoric acid ( H ₄ P ₂ O ₇ ) P ₄ O ₁₀+6 H ₂ O 4 H ₃ PO ₄ orthophosphoric acid

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