Which highly toxic, volatile chemical gas is spontaneously and slowly generated when stored chlorofo — Haloalkanes and Haloarenes Chemistry Question

💡 Solution & Explanation

Chloroform ($CHCl_3$) is severely prone to slow photo-oxidation when exposed to air and light, cleanly generating an exceptionally poisonous gas known as phosgene (carbonyl chloride, $COCl_2$) and hydrogen chloride. To prevent this, it is strictly stored in completely filled, dark-colored amber bottles.