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JEE (Mains+Advanced) 2026
I had a read through the 2024 paper2
- at no point in my life would I have done well in that exam : ... |
19-5-2025 at 03:50
by: Sulaiman |
Nitration mix from bisulfate and nitrate?
Quite a lot of relevant info. and references in the Wikipedia article 'Nitration'
https://en.m.wiki ... |
15-5-2025 at 04:43
by: Sulaiman |
DIY Heating Blocks For Flasks?
I've used an aluminium foil hot air bath a few times,
most useful when I distilled sulphuric aci ... |
4-5-2025 at 00:02
by: Sulaiman |
another route to diy Sulphuric acid ?
In the Wikipedia article on manganese dioxide
https://en.m.wikipedia.org/wiki/Manganese_dioxide
un ... |
26-4-2025 at 21:40
by: Sulaiman |
Chinese glassware and current events
Although it does not help with the current tariff conditions,
when searching for a particular part, ... |
25-4-2025 at 18:36
by: Sulaiman |
Crucible for NaOH fusion
[rquote=700467&tid=160817&author=DraconicAcid]I got nickel crucibles off of AliExpress that ... |
23-4-2025 at 18:59
by: Sulaiman |
Osmium ring is beautiful, but is it toxic ?
GUESSING :
if the ring is sintered rather than molten it may be quite porous to atmospheric oxygen? ... |
21-4-2025 at 03:55
by: Sulaiman |
Nitric Acid KNO3 in excess?
unless you want RFNA or WFNA
combine stoichiometric quantities of sulphuric scid, nitrate salt and ... |
16-4-2025 at 23:24
by: Sulaiman |
Leaking Unions
[rquote=700374&tid=160998&author=DanteDominic]...I've noticed that my mantle is starting to ... |
15-4-2025 at 19:53
by: Sulaiman |
Leaking Unions
I have some Quickfit glassware and some cheap Chinese glassware,
The main difference is the quality ... |
14-4-2025 at 19:32
by: Sulaiman |
Chemical respirators
For ventilation you need air going out, and air coming in.
and the air coming in should not be cont ... |
10-4-2025 at 00:35
by: Sulaiman |
it is an autofill burette
https://www.itm.com/product/bel-art-37915-1025-borosilicate-glass-automatic-self-zeroing-burette-379 ... |
8-4-2025 at 03:33
by: Sulaiman |
Removing sulfuric acid from a solid
As 40% sulphuric acid does not dehydrate materials like 98% does,
I guess that filter paper materia ... |
7-4-2025 at 17:27
by: Sulaiman |
Looking for replacement stopcock
I would clean that joint before trying a new glass stopcock
because it may jam up. |
4-4-2025 at 09:42
by: Sulaiman |
Best thing/way to clean hotplate?
out of curiosity I found that the ceramic is Pyroceram.
The wikipedia article is interesting https: ... |
28-3-2025 at 09:33
by: Sulaiman |
Large quantity of chemical reagents, for free! UK
If there are no bids for your eBay listing
consider re-listing at 99p starting price, no reserve.
... |
27-3-2025 at 13:24
by: Sulaiman |
Elemental sulfur from CS2
I would probably take some (100ml?) and 'have a play' with it.
boil it, burn it, do like the ether ... |
20-3-2025 at 04:47
by: Sulaiman |
neutralising and disposing, plan A
After thinking it through, I'm not too keen on the CaCl[sub]2[/sub] option due to the HCl produced.
... |
18-3-2025 at 09:07
by: Sulaiman |
Add rule to ban big tech use our posts to train AI
IF it is accepted that AI systems will develop based on the information (and inbuilt mechanisms) pro ... |
14-3-2025 at 04:51
by: Sulaiman |
Borosilicate tea pots that filter & more
I too like the borosilicate (or toughened glass even) tall form 'beaker' that is part of a cafetiere ... |
12-3-2025 at 21:10
by: Sulaiman |
How hazardous is fluorine chemistry?
OK sounds good, no bubbling or thermal problems, so simple, I like it.
I would make up the hydro ... |
12-3-2025 at 13:30
by: Sulaiman |
I am a (insert swear word here) idiot !
Despite all of the sensible warnings
I bought 500ml of 55% HF.
In itself that is a rather risky ch ... |
12-3-2025 at 09:09
by: Sulaiman |
as mentioned by others, methylene blue, used in classic blue bottle demonstration
Not restricted access, not too expensive, very low risks
an intense blue, can be diluted of course ... |
12-3-2025 at 04:52
by: Sulaiman |
Storage of pine oil and beta pinene.
IF the negative pressure is/was due to oxygen consumption
then 'worst' vacuum will be -0.2 atmosphe ... |
9-3-2025 at 05:45
by: Sulaiman |
Storage of pine oil and beta pinene.
I assume that oxygen has combined with the contents.
you could test for reduced (not necessarily ... |
9-3-2025 at 05:10
by: Sulaiman |
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