When phosphorus pentachloride is treated with a limited amount of water, it undergoes partial hydrolysis. What is the primary phosphorus-containing product formed in this initial stage?
Q1. When phosphorus pentachloride is treated with a limited amount of water, it undergoes partial hydrolysis. What is the primary phosphorus-containing product formed in this initial stage?
Answer: Phosphorus oxychloride (POCl3)
Explanation: PCl5 reacts with limited water to form POCl3 and HCl; full hydrolysis to H3PO4 only occurs with excess water.