On reaction with Cl 2 , phosphorus forms two types of halides ‘A’ and ‘B’. Halide A is yellowish-white powder but halide ‘B’ is colourless oily liquid. Identify A and B and write the formulas of their hydrolysis products.

Question

Philoid · Accepted Answer

when chlorine first react with phosphorous and heated in a retort, it will form phosphorous trichloride PCl₃. PCl₃ further react with chlorine to form PCl₅.

Halide A is PCl₅ because it is yellowish white powder

Halide B is PCl₃ because it is colourless oily liquid.

PCl₃ + 3H₂O H₃PO₃ + 3HCl

PCl₅ undergoes a violent hydrolysis

PCl₅ + H₂O POCl₃ + 2HCl

PCl₅ + 4H₂O H₃PO₄ + 5HCl

On reaction with Cl2, phosphorus forms two types of halides ‘A’ and ‘B’. Halide A is yellowish-white powder but halide ‘B’ is colourless oily liquid. Identify A and B and write the formulas of their hydrolysis products.

On reaction with Cl₂, phosphorus forms two types of halides ‘A’ and ‘B’. Halide A is yellowish-white powder but halide ‘B’ is colourless oily liquid. Identify A and B and write the formulas of their hydrolysis products.