HPO3 is the chemical formula of ______________ phosphoric acid?

Correct answer: C. Meta

  • A. Pyro
  • B. Ortho
  • C. Meta
  • D. None of these

Explanation

HPO3 is the empirical formula of metaphosphoric acid, formed by condensation of orthophosphoric acid with loss of water. Pyrophosphoric acid instead has the formula H4P2O7.

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