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Author: Subject: The Short Questions Thread (4)
artemov
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[*] posted on 24-12-2020 at 20:55


Quote: Originally posted by Antigua  
Why not? Alcohols don't form peroxides like ethers.



Erm I thought secondary alcohols do?

https://chemistry.stackexchange.com/questions/4597/isopropyl...
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itsallgoodjames
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[*] posted on 25-12-2020 at 08:01


If I recall correctly, only anhydrous isopropanol forms peroxides, though I don't have a source for that. If you're really concerned, test it for peroxides. It isn't that hard. Obviously don't distill to dryness, and follow all the common distillation precautions, but I wouldn't be to concerned about peroxides.



Nuclear physics is neat. It's a shame it's so regulated...

Now that I think about it, that's probably a good thing. Still annoying though.
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SHADYCHASE54
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[*] posted on 22-1-2021 at 08:35


Hello all,
I am wondering if someone could give me guidance as to where in western Canada I could have a couple samples spectographically analysed? I am looking for either Rahman or FTIR analysis, furthermore what range of cost would I be looking at?

Thanks for any help.
S.C54
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artemov
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[*] posted on 29-1-2021 at 01:06


Hi all, I am crystallising out some potassium chromate, what liquid can I use to wash the crystals with minimal loss?
It's very soluble even in cold water, and it will react with alcohols. Would acetone or MEK work? Cheers.
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fusso
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[*] posted on 2-2-2021 at 15:10


In the wiki page for isocyanic acid it said 'isocyanic acid hydrolyses to carbon dioxide and ammonia' but didnt state the rxn conditions, does anyone know what conds are needed, other than adding water?

[Edited on 210203 by fusso]
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CharlieA
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[*] posted on 2-2-2021 at 16:35


water?:D
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fusso
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[*] posted on 2-2-2021 at 16:44


@Charlie assuming you're replying to me, what else, if you know?
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B(a)P
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[*] posted on 2-2-2021 at 17:52


Quote: Originally posted by fusso  
@Charlie assuming you're replying to me, what else, if you know?


I think you will find some useful information in here
https://acp.copernicus.org/preprints/15/24217/2015/acpd-15-24217-2015.pdf
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Lion850
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[*] posted on 3-2-2021 at 19:04


How can I extract Gallium iii iodide GaI3 from concentrated hydrochloric acid? Solvents I have access to are DCM, Toluene, Xylene, Methanol, carbon tetrachloride, and carbon disulphide. Thanks in advance.
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yobbo II
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[*] posted on 13-2-2021 at 15:43


Could someone direct me to a (sodium) nitrate titration procedure using ferrous sulphate

Thanks
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Sulaiman
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[*] posted on 13-2-2021 at 17:12


A few choices :
https://www.google.com/search?q=Nitrate+ferrous+sulphate+tit...




CAUTION : Hobby Chemist, not Professional or even Amateur
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artemov
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[*] posted on 16-2-2021 at 21:40


Are my nickel sulfate crystals overdried? What are those whitish-green stuff?

20210217_115446.jpg - 101kB
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woelen
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[*] posted on 17-2-2021 at 14:03


Looks like anhydrous nickel sulfate. Pure anhydrous nickel sulfate looks as follows:

https://woelen.homescience.net/science/chem/compounds/nickel...




The art of wondering makes life worth living...
Want to wonder? Look at https://woelen.homescience.net
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artemov
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[*] posted on 17-2-2021 at 22:17


Quote: Originally posted by woelen  
Looks like anhydrous nickel sulfate. Pure anhydrous nickel sulfate looks as follows:

https://woelen.homescience.net/science/chem/compounds/nickel...


Thanks woelen!
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Panache
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[*] posted on 22-2-2021 at 23:58


Quote: Originally posted by artemov  
Quote: Originally posted by woelen  
Looks like anhydrous nickel sulfate. Pure anhydrous nickel sulfate looks as follows:

https://woelen.homescience.net/science/chem/compounds/nickel...


Thanks woelen!


A clickbait answer....as are all of woelens pages..well i find anyway. Your site for home chemists is kinda like facebook, you open it for a reason then three hours later not only have you not attented to the reason you looked there in the first place, you longer care about it as your interest in other stuff has been piqued!!.

If someone hasn't complimented you lately woelen on your digital presence. Its pretty fucking excellent and has been for a very longtime.
Good one.
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wg48temp9
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[*] posted on 23-2-2021 at 01:02


Just in case someone gets the wrong idea, there is none of the usual click bate or storm of ads or popups on woelen site or this site. Which is a refreshing difference.

So yes thanks woelen and SM




I am wg48 but not on my usual pc hence the temp handle.
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arkoma
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[*] posted on 23-2-2021 at 09:31


"clickbait" is a pretty damn disparaging word, sir.



Quote:
Travel is fatal to prejudice, bigotry, and narrow-mindedness, and many of our people need it sorely on these accounts.

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Smash. All. Icons
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Panache
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[*] posted on 2-3-2021 at 16:47


Regarding offence taken by my use of the clickbait word. I understand however...i ...was...using..it
in a metaphorical manner.....isn't english a great language.

Terribly sorry if my metaphor was shit and confusing (which it was). I was merely attempting to describe the captivating nature of the website.

And there ain't a single ad just lots of stuff about Jesus....(that was joke there's no stuff about jesus)
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yobbo II
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[*] posted on 5-3-2021 at 18:18



Better to say that 'Woelens site is good'. (including the stuff about Jesus). :-)


Thanks for the link way above Sulaiman.

Can anyone get me a phase diagram for the system KNO3, NaCl and water.
It does not appear to exist for some reason or other.

Yob
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itsallgoodjames
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[*] posted on 21-3-2021 at 13:34


What's a reasonable wattage for a heating mantle? Is 300w reasonable for 250ml? What about 500ml or 1000ml?



Nuclear physics is neat. It's a shame it's so regulated...

Now that I think about it, that's probably a good thing. Still annoying though.
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Antigua
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[*] posted on 21-3-2021 at 13:36


You need less power for heating mantles than for hotplates in terms of heating (1/2 the power, as a rule of thumb, or even less). I have a 100ml heating mantle that is made from a 100W heating wire and it's very powerful. 200W should be more than enough for 500ml. I'd go for 300 or 350W for 1L.
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itsallgoodjames
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[*] posted on 21-3-2021 at 14:14


Quote: Originally posted by Antigua  
You need less power for heating mantles than for hotplates in terms of heating (1/2 the power, as a rule of thumb, or even less). I have a 100ml heating mantle that is made from a 100W heating wire and it's very powerful. 200W should be more than enough for 500ml. I'd go for 300 or 350W for 1L.


Ok, thanks :)




Nuclear physics is neat. It's a shame it's so regulated...

Now that I think about it, that's probably a good thing. Still annoying though.
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Panache
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[*] posted on 25-4-2021 at 17:40


Quote: Originally posted by yobbo II  

Better to say that 'Woelens site is good'. (including the stuff about Jesus). :-)


Yob


Yes couldn't agree more
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paulll
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[*] posted on 25-4-2021 at 23:59


Do bromide salts usually have a vinegar-esque whiff about them or should I be suspicious about this vaguely-acetic-smelling KBr?
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[*] posted on 26-4-2021 at 04:24


Nope, all my samples are odorless.



Reflux condenser?? I barely know her!
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