PCl₅ + H₂O → POCl₃ + 2 HCl

Reactants:

• PCl₅ – Phosphorus pentachloride , Phosphorus(V) chloride
  • Other names: Pentachlorophosphorane , Pentachlorophosphorus , Phosphoric chloride ... show morePhosphorus perchloride , [PCl5] , PCl5 show less
  • Appearance: Colourless crystals ; Fuming white-to-yellow crystals with pungent odour ; White to pale-yellow, crystalline solid with a pungent, unpleasant odor.
• H₂O – Water, oxidane
  • Other names: Water (H2O) , Hydrogen hydroxide (HH or HOH) , Hydrogen oxide ... show moreDihydrogen monoxide (DHMO) (systematic name) , Hydrogen monoxide , Dihydrogen oxide , Hydric acid , Hydrohydroxic acid , Hydroxic acid , Hydrol , Μ-oxido dihydrogen , Κ1-hydroxyl hydrogen(0) show less
  • Appearance: White crystalline solid, almost colorless liquid with a hint of blue, colorless gas

Products:

• POCl₃ – Phosphoryl trichloride
  • Other names: Phosphoryl chloride , Phosphorus oxychloride , Phosphoric trichloride ... show moreTrichlorophosphate , Phosphorous oxychloride , Phosphorus chloride , Phosphorus oxytrichloride , Phosphorus trichloride oxide , [PCl3O] , POCl3 , Phosphorus(V) trichloride oxide , Trichlorophosphorus oxide , Trichlorophosphine oxide , Phosphorus chloride [Phosphorus oxychloride] show less
  • Appearance: Colourless liquid, fumes in moist air ; Brown fuming liquid with pungent odour ; Clear, colorless to yellow, oily liquid with a pungent & musty odor. [Note: A solid below 34°F.]
• HCl – Chlorane , Hydrogen chloride
  • Other names: Hydrochloric acid , M , Uriatic acid ... show moreHydronium chloride , Chlorhydric Acid , Hydrochloric acid gas , HCl , Anhydrous hydrogen chloride , Hydrochloric acid, anhydrous , Aqueous hydrogen chloride , [Note: Often used in an aqueous solution.] show less
  • Appearance: Colorless, transparent liquid, fumes in air if concentrated ; Colorless gas ; Colourless compressed liquefied gas with pungent odour ; Colorless to slightly yellow gas with a pungent, irritating odor. [Note: Shipped as a liquefied compressed gas.]