Hello there,

Phosphorus is known to form two types of halides that are of type PX ₃ and PX 5 . Of all the phosphorus halides formed, most common are phosphorus pentachloride, PCl ₅ and phosphorus trichloride, PCl ₃ .

Some basic equations of these halides are listed below.

PCl ₃ + 3H ₂ O → H ₃ PO ₃ + 3HCl

PCl ₅ + H ₂ O→POCl ₃ + 2HCl

3C ₂ H ₅ OH + PCl ₃ → 3C ₂ H ₅ Cl + H ₃ PO ₃

Hope it helps you