bigtrevs98
Harmless
Posts: 35
Registered: 14-4-2015
Member Is Offline
Mood: No Mood
|
|
schweizer's reagent
So is there some kind of way to make schweizer's reagent from copper acetate, bleach, and ammonia. If so could someone explain to me how? If not? How
else could I do it?
|
|
|
Milan
Harmless
Posts: 30
Registered: 14-3-2015
Location: Europe
Member Is Offline
Mood: No Mood
|
|
Shouldn't you just be able to turn copper acetate into copper hydroxide with a little ammonia.
Then filter it and rinse. After that just dissolve your copper hydroxide in ammonia to make the Schweizer's reagent.
|
|
|
Eddygp
National Hazard
Posts: 858
Registered: 31-3-2012
Location: University of York, UK
Member Is Offline
Mood: Organometallic
|
|
It's everywhere on the Internet, anyway.
For some extra discussion:
What is the mechanism by which solutions of Schweizer's reagent dissolve cellulose?
[Edited on 21-4-2015 by Eddygp]
there may be bugs in gfind
[ˌɛdidʒiˈpiː] IPA pronunciation for my Username |
|
|
bigtrevs98
Harmless
Posts: 35
Registered: 14-4-2015
Member Is Offline
Mood: No Mood
|
|
Well why do I search for hours sometimes and come upcompletely empty handed. Like I'm trying to find ratios of copper acetate and 5% ammonia. To make
copper hydroxide the ratio of copper hydroxide to ammonia. I find literally no helpful information on Google or anything
|
|
|
DraconicAcid
International Hazard
Posts: 4357
Registered: 1-2-2013
Location: The tiniest college campus ever....
Member Is Offline
Mood: Semi-victorious.
|
|
Quote: Originally posted by bigtrevs98  | | Well why do I search for hours sometimes and come upcompletely empty handed. Like I'm trying to find ratios of copper acetate and 5% ammonia. To make
copper hydroxide the ratio of copper hydroxide to ammonia. I find literally no helpful information on Google or anything |
You want a 1:2 mole ratio of copper acetate to ammonia.
Please remember: "Filtrate" is not a verb.
Write up your lab reports the way your instructor wants them, not the way your ex-instructor wants them.
|
|
|
Amos
International Hazard
Posts: 1406
Registered: 25-3-2014
Location: Yes
Member Is Offline
Mood: No
|
|
| Quote: Originally posted by bigtrevs98 | | Well why do I search for hours sometimes and come upcompletely empty handed. Like I'm trying to find ratios of copper acetate and 5% ammonia. To make
copper hydroxide the ratio of copper hydroxide to ammonia. I find literally no helpful information on Google or anything |
You can skip the google searching if you read from a textbook or take a class in chemistry; one of the first things you learn is about writing and
balancing different types of chemical reactions.
Alternatively, a site like this may help. If you know that your reactants are copper acetate and ammonia, you can put Cu(CH3COO)2 and NH4OH(that's
ammonium hydroxide, which is present in small amounts in ammonia solutions and actually donates the hydroxide ions for this reaction) on the left
side, and your products, Cu(OH)2 + NH4CH3COO(ammonium acetate), it will balance it for you, and also calculates mass ratios and amounts.
|
|
|
bigtrevs98
Harmless
Posts: 35
Registered: 14-4-2015
Member Is Offline
Mood: No Mood
|
|
OK so I was basically going off something I read from a post somewhere on here (I'll post sources later when I find them again) and I dripped bleach
into my copper acetate crystals a.d I ended up with this... what did I do?
[Edited on 22-4-2015 by bigtrevs98]
http://www.sciencemadness.org/talk/viewthread.php?tid=15484
" You can use it to make Schweizer's reagent - if you mix with NaOH or bleach, filter, and mix with ammonia"
[Edited on 22-4-2015 by bigtrevs98]
|
|
|
Milan
Harmless
Posts: 30
Registered: 14-3-2015
Location: Europe
Member Is Offline
Mood: No Mood
|
|
Hmm, the copper hydroxide probably turned into copper carbonate from atmospheric CO2.
I remember reading in a another thread about precipitating copper hydroxide using either NaOH or ammonia,
and it was found that the copper hydroxide from NaOH approach is to unstable to be useful, while the ammonia approach gave a more lasting copper
hydroxide.
|
|
|
gatosgr
Hazard to Others
Posts: 237
Registered: 7-4-2015
Member Is Offline
Mood: No Mood
|
|
any copper salt with similar solubility constant will do I guess
what is bleach? chemical formula..
[Edited on 28-4-2015 by gatosgr]
|
|
|
Amos
International Hazard
Posts: 1406
Registered: 25-3-2014
Location: Yes
Member Is Offline
Mood: No
|
|
| Quote: Originally posted by bigtrevs98 | OK so I was basically going off something I read from a post somewhere on here (I'll post sources later when I find them again) and I dripped bleach
into my copper acetate crystals a.d I ended up with this... what did I do?
[Edited on 22-4-2015 by bigtrevs98]
http://www.sciencemadness.org/talk/viewthread.php?tid=15484
" You can use it to make Schweizer's reagent - if you mix with NaOH or bleach, filter, and mix with ammonia"
[Edited on 22-4-2015 by bigtrevs98] |
I'm waiting to see a source that says dripping bleach into copper acetate solution produces Schweizer's reagent. Seriously, google search Schweizer's
reagent, or better yet, search YouTube. Nobody's going to be helpful if you don't do any of your own work.
|
|
|
gatosgr
Hazard to Others
Posts: 237
Registered: 7-4-2015
Member Is Offline
Mood: No Mood
|
|
well if it does work you've percipitated copper hydroxide and now you should mix it with ammona in order to get the reagent you want
|
|
|
![[*]](images/xpblue/default_icon.gif){kind=icon}
