JEE Main · 2022 · Shift-ImediumPB12-060

Which oxoacid of phosphorous has the highest number of oxygen atoms present in its chemical formula?

p-Block Elements (Class 12) · Class 12 · JEE Main Previous Year Question

Question

Which oxoacid of phosphorous has the highest number of oxygen atoms present in its chemical formula?

Options
  1. a

    Pyrophosphorous acid

  2. b

    Hypophosphoric acid

  3. c

    Phosphoric acid

  4. d

    Pyrophosphoric acid

    ✓
Correct Answerd

Pyrophosphoric acid

Detailed Solution

Strategy: Compare the formulas of various oxoacids of phosphorus.

Step 1: Formula Evaluation

  • Pyrophosphorous acid: \ceH4P2O5\ce{H4P2O5} (5 Oxygen atoms)
  • Hypophosphoric acid: \ceH4P2O6\ce{H4P2O6} (6 Oxygen atoms)
  • Phosphoric acid: \ceH3PO4\ce{H3PO4} (4 Oxygen atoms)
  • Pyrophosphoric acid: \ceH4P2O7\ce{H4P2O7} (7 Oxygen atoms)

Step 2: Comparison Among the given options, Pyrophosphoric acid contains the highest number of oxygen atoms (7) in its chemical formula.

Answer: (Option) [d] Pyrophosphoric acid\boxed{\text{Answer: (Option) [d] Pyrophosphoric acid}}

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