Hey guys! Thank you for viewing my channel,
today I’ll show you one funny experiment with titanium dihydride,
this is not something astonishing, but it also took me not much time to make this video
Titanium dihydride is a dark-gray powder.
It is used to produce very pure hydrogen and silicides, borides or titanium nitrides.
Actually they do not deal with individual titanium dihydride in practice,
and a solid solution of hydrogen in titanium is called titanium dihydride,
the composition of which you see on the screen. This is a nonstoichiometric material.
The more hydrogen it contains, the darker titanium hydride powder is.
Unlike highly-flammable titanium metal powder, titanium hydride powder burns much more poorly in the air
However, it reacts with oxidizing agents quite violently,
therefore it is often used in pyrotechnics to create white sparks
Now you can observe a reaction between titanium hydride and ammonium perchlorate
I showed some reactions with the latter in one of my previous videos
But the main thing that I want to show you today
is titanium hydride’s reversible decomposing into titanium and hydrogen
To perform this, it must be heated to above 500 ℃
To dissociate titanium hydride, it is necessary to maintain a high temperature.
See how interesting the evolution of hydrogen is.
The sintered upper layer of titanium hydride prevents the release of hydrogen to the top of the test-tube,
so we do not see the balloon increasing in volume
Nothing prevents the release of hydrogen now, and we can observe the balloon’s volume changing
If you stop heating titanium hydride intensively,
the reaction’s equilibrium shifts towards the formation of the starting materials,
and the volume of the ball decreases
Let's put a burning match to the balloon to make sure that there is hydrogen inside,
and, if there is, we’ll hear a distinctive pop
Thanks for watching, guys, and thanks for leaving comments and remarks on the video,
I do read all of them and try to reply to most of them over time. Stay tuned