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

What is the result of heating orthophosphorous acid (or phosphorous acid)?

Options

  1. AIt forms phosphine (PH 3 )
  2. BIt forms orthophosphoric acid (or phosphoric acid)
  3. CIt forms pyrophosphorous acid
  4. DIt forms pyrophosphoric acid

Correct answer

B. It forms orthophosphoric acid (or phosphoric acid)

Step-by-step solution

The paragraph mentions that orthophosphorous acid (or phosphorous acid) disproportionates on heating to give orthophosphoric acid (or phosphoric acid) and phosphine (PH 3 ).

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