Chemical Concept Demonstrated: Chemistry of phosphorus
|A flask is filled with O2, and phosphorus is ignited and immersed in the flask (picture #2).|
The phosphorus lights up brightly. As the flask fills with smoke, the entire flask gives off a uniform glow.
Phosphorus reacts with oxygen in an exothermic reaction:
P4 (s) + O2 (g) --> P4O10 (s)
This reaction produces so much light that it is nicknamed the "Mock Sun."