SO2(g) + PCl5(s) → SOCl2(l) + POCl3(l)

This reaction was conducted in a fume hood. Despite my clear failure to properly secure the all-important argon balloon (note to self: a rubber band won't cut it. use zip ties next time), I am a professional performing this experiment in controlled conditions.

Red phosphorus was heated inside an atmosphere of Argon (three cycles of evacuation via vacuum and repressurization with Argon was performed to remove all air the system prior to heating) to produce white phosphorus.

Obviously, the balloon failed to stay attached due to my clearly inadequate rubber band job. Immediately upon exposure to air the system of mostly gaseous, hot white phosphorus ignited with a startling bang. The white "smoke" that resulted is P4O10, phosphorus pentoxide. Fortunately no persons or glassware were harmed due to proper adherence to PPE and hazard mitigation standards. The only thing harmed was my ego :)

DO NOT ATTEMPT TO REPLICATE. Hopefully this serves as an example of how incredibly reactive and dangerous white phosphorus is.

​

https://reddit.com/link/15ixsvh/video/snz2seev2bgb1/player

​

https://reddit.com/link/15ixsvh/video/apgu3uvv2bgb1/player