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NEET2002Chemistryp Block Elements (Group 15, 16, 17 & 18)Actual

Which of the following compound is a tribasic acid?

Options

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

Correct answer

B. H ₃ PO ₄

Step-by-step solution

H ₃ PO ₄ is a tetrahedral structure molecule. It contains three - OH group so that three protons can be released. So it acts as a tribasic acid.

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