Q47Short answer
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. – 2+
Show answer
A is PCl5 (It is yellowish white powder) P4 + 10Cl2 → 4PCl5 B is PCl3 (It is a colourless oily liquid) P4 + 6Cl2 → 4PCl3 Hydrolysis products are formed as follows : PCl3 + 3H2O → H3PO3+3HCl PCl5 + 4H2O → H3PO4 + 5HCl – 2+ + 3+