video tutorial Preparation of liquid nitrogen dioxide

Name: video tutorial - Preparation of liquid nitrogen dioxide
Uploaded: 2025-12-11T09:03:44.215Z
Duration: 11 min 7 s
Description: Today we're celebrating our 1000th Kimplaheer channel subscriber, and as a reward this video

Celebrates reaching 1000 subscribers and uses old coins to explore nitrogen oxides via nitric acid.
Describes setting up equipment with drying and cooling to condense nitrogen dioxide species into a blue liquid.
Observes brown nitrogen dioxide gas initially, followed by a blue liquid consistent with a nitrogen dioxide/nitrogen trioxide equilibrium (and traces of dinitrogen tetroxide).
Notes the reaction is exothermic and that apparatus is purged and quenched after the run; product appears to be a blue liquid that contains nitrogen oxides.
Performs small-scale follow-up tests on the product with water, hypoxylamine hydrochloride, ethanol, benzyl alcohol, and potassium hydroxide, reporting various reactions and strong odors; remarks the method is not particularly practical.
Concludes with reflections on the NO2/N2O4 equilibrium and possible involvement of nitric oxide, and invites viewer ideas.