Just for fun: reaction between elemental mercury and elemental bromine.
It’s a quite violent reaction what generates a lot heat and because of this, most of the not yet reacted bromine evaporates as seen on the gifs. From the reaction mercurous bromide (Hg2Br2) forms what is a white, highly toxic powder, luckily not well soluble in most solvents.
What happened here: This: 2Hg(l) + Br2(l) –> Hg2Br2(s)
Mercury(I) bromide or mercurous bromide is the chemical compound composed of mercury and bromine with the formula Hg2Br2. It changes color from white to yellow when heated and fluoresces a salmon color when exposed to ultraviolet light. It has applications in acousto-optical devices.
Bromination with elemental bromine in acetic acid as a solvent.
The reason why the gas bubbler at the top looks so strange is because I added some Eosine to the liquid inside it what has a really intense color. So not bromine vapors or anything else caused it’s coloration.
The great thing was in this case was that the product precipitated from the solution as seen on the gifs, so I only had to filter it out.