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AIIMS2011Chemistryp Block Elements (Group 15, 16, 17 & 18)

PCl ₃ on hydrolysis gives fumes of

Options

  1. AH ₃ PO ₃+ HCl
  2. BH ₃ PO ₄+ HCl
  3. CH ₃ PO ₂ and H ₃ PO ₃
  4. DH ₃ PO ₂+ HCl

Correct answer

A. H ₃ PO ₃+ HCl

Step-by-step solution

Phosphorus trichloride reacts violently with water forming phosphorous acid. PCl ₃+3 HOH H ₃ PO ₃+3 HCl

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