Hey, guys! Heating iodine with bromine up to the point of the deliquation of the whole mass and its later cooling,
results in the formation of an interhalogen compound, known as Iodine monobromide.
It is a dark red solid. This bottle contains 100 grams of Iodine monobromide
Now I’ll open it and show you how the reagent looks like.
Iodine monobromide resembles elemental iodine
However, Iodine monobromide is volatile at room temperature,
and, unlike elemental iodine, it has these distinctive heavy dark-orange vapors, that you can observe right now
This is how Iodine monobromide crystals look at a very close range.
At melting point, Iodine monobromide changes into a red-brown liquid with a strong smell of bromine
Here Iodine monobromide vapors cool down on the cold tube walls, forming beautiful crystals
And now it’s time to demonstrate the chemical properties of this reagent
When heated, Iodine monobromide reacts with concentrated sulfuric acid that oxidizes it to bromine, reducing to sulfur dioxide in process
When reacting with alkali solution, Iodine monobromide forms bromide, iodide and iodate salts.
All three of them are colorless, that’s why, unlike the previous reaction, the solution in this one has no color
Hydrazine hydrate very actively reduces iodine bromide to elemental iodine, hence the vast amount of purple smoke that we can see here
The reaction of potassium with melted Iodine monobromide results in explosion
Copper powder reacts with melted Iodine monobromide pretty actively too, but there’s no explosion
Red phosphorus combusts on contact with it
And antimony powder reacts with solid iodine bromide instantly
You all know that aluminum reacts with bromine and iodine quite violently, so let’s check its interaction with iodine bromide
Thanks for watching, guys, don’t forget to give this video a like, if you enjoyed it,
and I’ll do my best to make another one, but, next time, with much more active iodine monochloride
seeya in the next video