| Search |
| [Next Page] |
Missing persons
Nicodem, good to see that you are fine. I understand what you mean with being occupied with other th ... |
12-7-2020 at 09:08
by: woelen |
Amazing fluorescent precipitate of copper(I) with propargyl alcohol
I tried a similar experiment with a different reductor.
I dissolved some propargyl alcohol in wat ... |
10-7-2020 at 12:36
by: woelen |
18K Gold sould I drop it in aqua regia.
I find this a very fishy story anyway. Someone stopping in the streets, in front of a total stranger ... |
10-7-2020 at 05:24
by: woelen |
Copper cyanurate (and other cyanurates}
I would not call that pink. I have the impression that the pure compound would be (nearly) white, bu ... |
10-7-2020 at 01:32
by: woelen |
sodium or potassium dichromate.
I would go for 250g of K2Cr2O7 and 100g of Na2Cr2O7.2H2O. Then for $40 you have both.
|
10-7-2020 at 01:25
by: woelen |
sodium or potassium dichromate.
I personally like potassium dichromate more than the sodium salt. It is anhydrous, the sodium salt i ... |
9-7-2020 at 23:38
by: woelen |
Super simple sulfuric acid from bisulfate->pyrosulfate->hydrolysis?
Wikipedia is notalways right when it comes to specific properties of chemicals. I have corrected qui ... |
9-7-2020 at 23:30
by: woelen |
Super simple sulfuric acid from bisulfate->pyrosulfate->hydrolysis?
Adding sodium pyrosulfate to water simply leads to formation of sodium bisulfate:
Na2S2O7 + H2O - ... |
9-7-2020 at 06:28
by: woelen |
U.S. based suppliers that will sell to individuals?
I have good experience with https://www.artcraftchemicals.com/
It is in New York, geared towards ph ... |
8-7-2020 at 23:51
by: woelen |
18K Gold sould I drop it in aqua regia.
This sounds too good to be true. Current spot price of gold is well over US$ 50 per gram. I expect i ... |
8-7-2020 at 23:47
by: woelen |
Amazing fluorescent precipitate of copper(I) with propargyl alcohol
I purchased some propargyl alcohol, because of its triple bond. It is the simplest compound, availab ... |
8-7-2020 at 23:31
by: woelen |
Weird smell from Zn + FeSO4 reaction vessel?
@AJKOER: I think that all of this is nitpicking in reverse. Theoretical issues, far from the practic ... |
8-7-2020 at 23:24
by: woelen |
Amazing fluorescent precipitate of copper(I) with propargyl alcohol
I just did an experiment with propargyl alcohol, which has structure HC≡CCH2OH.
It has a triple b ... |
7-7-2020 at 11:36
by: woelen |
What causes the delays in a HCl+xNO3+Cu reaction?
I noticed the same with adding KBr or NaBr to 60% HNO3. If you do this, no reaction occurs initially ... |
7-7-2020 at 07:27
by: woelen |
Weird smell from Zn + FeSO4 reaction vessel?
Pick out the metal pieces of zinc from the mix and then just dump the remaining liquid mix in the to ... |
7-7-2020 at 05:24
by: woelen |
Methanol vapours
If you do this outside on the balcony, then the vapors will disappear very quickly. After your exper ... |
6-7-2020 at 23:52
by: woelen |
Weird smell from Zn + FeSO4 reaction vessel?
I think that there are impurities in either the zinc, or the FeSO4, or both, which produce smelly co ... |
6-7-2020 at 23:39
by: woelen |
Anhydrous oxalic acid
I doubt whether the method with carbon tetrachloride is better than Bedlasky's method. CCl4 is not e ... |
6-7-2020 at 02:01
by: woelen |
Bisulfite adduct and reagents?
The sulphur world is a complicated one. There are many compounds which you can obtain, all of them o ... |
5-7-2020 at 23:03
by: woelen |
Bisulfite adduct and reagents?
The bisulfite ion does not exist in the solid state. Sodium bisulfite is not a chemical you can buy. ... |
5-7-2020 at 12:42
by: woelen |
KClO3 and H2SO4 reaction
It might be that dilution in a lot of sulfuric acid makes the mix less explosive. The OP used 1 gram ... |
3-7-2020 at 13:41
by: woelen |
Blowing 100k on science equipment
I agree with Dr.Bob that it is best to stay away from the bigger tools. These tools of course are fa ... |
2-7-2020 at 23:29
by: woelen |
A day of summer chemistry.
@j_sum1: With copper nitrate it does not work, there is too much water of crystallization in copper ... |
2-7-2020 at 23:12
by: woelen |
Blowing 100k on science equipment
A very nice addition could be some electronics equipment, demonstrating basic principles of modern e ... |
1-7-2020 at 23:49
by: woelen |
A day of summer chemistry.
A very nice one, which I did at a kids party (12 year old kids) was a mix of 5 grams of Sr-nitrate, ... |
1-7-2020 at 23:14
by: woelen |
| [Next Page] |
