Which of the following produces PCl3 ?
When white phosphorus is treated with a jet of dry Chlorine gas
When Thionyl chloride reacts with white phosphorus
When white Phosphorus reacts with Chlorine gas,
P4+6Cl2→4PCl3
White phosphorus does not seem to yield the same product in an aqueous solution containing dissolved Cl2.Note that PCl3 is very highly toxic and corrosive. Its production is regulated and controlled according to the chemical weapons convention.
When white Phosphorus reacts with Thionyl Chloride,
P4+8SOCl2→4PCl3+4SO2+2S2Cl2
When Phosphorus pentachloride undergoes hydrolysis,
PCl5+4H2O→H3PO4+5HCl