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What was amateur chemistry like in the USSR?
[rquote=618507&tid=152391&author=Schleimsäure]
The chemistry set I owned had a Russian man ... |
22-7-2019 at 11:46
by: teodor |
The most useful three things in my lab
1. Books.
2. Books.
3. Books.
I prefer paper books but most of them are in electronic form, al ... |
22-7-2019 at 11:41
by: teodor |
Is sulphite strong enough to reduce Cr(VI) to Cr(II)?
The discussion in [url=http://www.sciencemadness.org/talk/viewthread.php?tid=151482]this thread[/url ... |
22-7-2019 at 07:51
by: teodor |
Hydroquinone in the UK
Sorry, I don't know the answer to your question but main usage of hydroquinone is as a part of a pho ... |
22-7-2019 at 07:41
by: teodor |
Questions about chlorine safety
My biggest accident with chlorine was mixing a large quantity of hydrochloric acid and hydrogen pero ... |
22-7-2019 at 06:03
by: teodor |
Calcium Carbonate turns yellow
Most probably you see Fe, but the problem is that Fe contamination is most easily to see and if your ... |
22-7-2019 at 05:05
by: teodor |
Melting NaOH in a glass tube
[rquote=617959&tid=152024&author=morganbw]I do not think this is a test you want to add to y ... |
20-7-2019 at 03:02
by: teodor |
Strange behaviour of Na2S in a water solution
[rquote=617888&tid=151911&author=icelake]
[quote]
2.5 parts of solid anhydrous NaHS precip ... |
19-7-2019 at 06:29
by: teodor |
Reaction dynamics of thiosulfate ion
It was another accidental observation which called me for studying some new part of chemistry.
I ... |
19-7-2019 at 03:17
by: teodor |
Melting NaOH in a glass tube
Oh, thank you, fusso. So, I believe it is the same reaction as between NaOH water solution and glass ... |
19-7-2019 at 03:00
by: teodor |
UNBELIEVABLY CHEAP microscopes
[rquote=615179&tid=151004&author=Sulaiman]
A question for microscopists :
assuming that th ... |
19-7-2019 at 02:14
by: teodor |
Strange behaviour of Na2S in a water solution
[rquote=617875&tid=151911&author=icelake][rquote=617857&tid=151911&author=teodor][rq ... |
18-7-2019 at 07:30
by: teodor |
Melting NaOH in a glass tube
I tried to analyze some unknown substance with a melting point close to that of NaOH. So, I did a re ... |
18-7-2019 at 04:58
by: teodor |
Chemistry of insoluble sulfides
[rquote=617852&tid=151973&author=Metallus]
@teodor thank you very much for the references. ... |
18-7-2019 at 04:22
by: teodor |
Strange behaviour of Na2S in a water solution
[rquote=617693&tid=151911&author=icelake][quote]
High-purity sodium monosulfide can be obta ... |
18-7-2019 at 02:12
by: teodor |
Strange behaviour of Na2S in a water solution
So, I poured a little methylated spirit (5% MeOH, 4% H2O, 91% EtOH) on a watch glass and stirred a b ... |
18-7-2019 at 01:38
by: teodor |
Hydrochloric acid impurities, where do they come from?
[rquote=617766&tid=151853&author=Antiswat]
Arsenic (As): <2ppm
[/rquote]
Arsenic is ... |
17-7-2019 at 03:19
by: teodor |
Chemistry of insoluble sulfides
I think that any good old book designated to the topic of cations analysis contains a plenty of info ... |
17-7-2019 at 02:45
by: teodor |
Strange behaviour of Na2S in a water solution
Thank you Chem Science, rockyit98, icelake and AJKOER for the interest to this topic and the informa ... |
17-7-2019 at 01:23
by: teodor |
Strange behaviour of Na2S in a water solution
icelake, I think that your search skills are impressive. Could you search also which process can cau ... |
16-7-2019 at 02:24
by: teodor |
Strange behaviour of Na2S in a water solution
I bought 100g of what they say is Na2S * 9H2O. There is no information about purity. It is chewing g ... |
15-7-2019 at 01:42
by: teodor |
Processing BaSO4 to either carbonate or sulfide
[rquote=507465&tid=80545&author=RogueRose]I've been reading over the processes of processing ... |
9-7-2019 at 07:31
by: teodor |
BaCrO4 and 3 different acids
[rquote=617224&tid=151482&author=teodor][rquote=617181&tid=151482&author=nezza]Addin ... |
9-7-2019 at 06:44
by: teodor |
BaCrO4 and 3 different acids
[rquote=617153&tid=151482&author=Bedlasky]Dichromate oxidize dilute HCl slowly.
[Edited on ... |
9-7-2019 at 02:09
by: teodor |
BaCrO4 and 3 different acids
Also I think complex formation, as with HCl, HNO3 prevents oxidation Cr(III) to Cr(VI) when the solu ... |
9-7-2019 at 01:23
by: teodor |
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