Hello guys! in some of my previous videos I use metallic samarium and because of it being a very rare agent in practical chemistry
that many people come across only in books or articles I decided to film a few reactions using it
Metallic samarium as well as alkaline or alkaline earth metals is kept under a layer of mineral oil or kerosene
it reacts with whater too, but much slower
As you might notice my sample of metallic samarium doesn't look like a cast ingot
It's a chemical element
attained by dendritic
crystallization that got its name for its resemblance to
a tree's body with branches going away from it in air Samarium gets covered with layer of oxide
So I had to uncover the metal's surface to show you the genuine element
That's what a purest sample of metallic samarium looks like
Samarium powder may be ignited by a spark
In burns off in a purple pink flame in pure oxygen and in reactions with halogens
Here is a classic reaction with sulfur
There were a lot of reactions of metal powders with potassium superoxide in the last video with your chemical suggestions
So now it's time for metallic Samarium powder
So here is a reaction with barium peroxide
Metallic samarium is actively dissolved in nitric acid
But samarium nitrate anhydros can't be obtained from this solution, only crystallohydrate
Samarium nitrate anhydros can't be attained by dehydration of crystallohydrate, because during the dehydration it will lose water
Turning into a basic nitrate
which is
insoluble in water
And then it will turn into an oxide if heated hereafter. So to get nitrates anhydrous we use the reaction with nitrogen
diodioxide. It can be demonstrated more simply by burning off samarium powder in nitrogen dioxide atmosphere
In order to fill a flask with nitrogen dioxide I used the reaction of copper with nitric acid.
As you might've noticed, metalic samarium was burning actively in the nitrogen dioxide atmosphere
so I decided to pour out dinitrogen trioxide onto burning samarium. Dinitrogen trioxide is a blue-coloured liquid
that is in fact Nitrous anhydride, quickly dissolving into NO and NO2 at room temperature.
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