nezza
Hazard to Others
Posts: 324
Registered: 17-4-2011
Location: UK
Member Is Offline
Mood: phosphorescent
|
|
A quick test.
here's a quick test. What reaction is shown in the attached video. It is shot in real time.
Attachment: Test.mp4 (3.4MB)
This file has been downloaded 444 times
If you're not part of the solution, you're part of the precipitate.
|
|
|
nezza
Hazard to Others
Posts: 324
Registered: 17-4-2011
Location: UK
Member Is Offline
Mood: phosphorescent
|
|
Here's a clue. The liquid is just water.
If you're not part of the solution, you're part of the precipitate.
|
|
|
fluorescence
Hazard to Others
Posts: 285
Registered: 11-11-2013
Member Is Offline
Mood: So cold outside
|
|
Maybe Sodium Peroxide in water? The color would fit but I am unsure about the reactivity.
|
|
|
nezza
Hazard to Others
Posts: 324
Registered: 17-4-2011
Location: UK
Member Is Offline
Mood: phosphorescent
|
|
Clue 2. The object dropped in is an element.
If you're not part of the solution, you're part of the precipitate.
|
|
|
Magpie
lab constructor
Posts: 5939
Registered: 1-11-2003
Location: USA
Member Is Offline
Mood: Chemistry: the subtle science.
|
|
sulfur chunk into superheated water.
The single most important condition for a successful synthesis is good mixing - Nicodem
|
|
|
nezza
Hazard to Others
Posts: 324
Registered: 17-4-2011
Location: UK
Member Is Offline
Mood: phosphorescent
|
|
Cold water. The gas released is hydrogen.
If you're not part of the solution, you're part of the precipitate.
|
|
|
phlogiston
International Hazard
Posts: 1379
Registered: 26-4-2008
Location: Neon Thorium Erbium Lanthanum Neodymium Sulphur
Member Is Offline
Mood: pyrophoric
|
|
Europium.
-----
"If a rocket goes up, who cares where it comes down, that's not my concern said Wernher von Braun" - Tom Lehrer |
|
|
nezza
Hazard to Others
Posts: 324
Registered: 17-4-2011
Location: UK
Member Is Offline
Mood: phosphorescent
|
|
Spot on. I had a sample of Europium in my element collection which had got a heavy coating of oxide/carbonate from storage so I thought I would clean
it up. While doing so I cut off a small amount to experiment with. The reaction with water is supposed to be similar to that of Calcium. It is Waay
more rapid than that as can be seen from the video. I have attached a video of Strontium reacting with water and Europium reacts more violently than
that. The yellow colour I suppose to be Eu(II) as on standing it gets much paler and on ignition of the residue gives white Eu(III) oxide. I have a
couple of other observations.
The metal is soft - about as hard as lead.
The metal reacts with methanol, although I cannot be sure that this is not due to small quantities of water in my methanol. The group II metals do
not.
The hydroxide suspension does not react alkaline so its solubility must be very low
I am going to use the remainder of the hydroxide I have to look at a few other Europium compounds.
Attachment: Strontium small.mp4 (7.7MB)
This file has been downloaded 398 times
[Edited on 6-3-2017 by nezza]
If you're not part of the solution, you're part of the precipitate.
|
|
|
![[*]](images/xpblue/default_icon.gif){kind=icon}
