Talk:Solvent: Difference between revisions
m Signing comment by Pwt dk - "→Solvent is a liquid?: " |
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Why are we saying "A solvent is a liquid" here? The [[solution]] page clearly states that gases may be dissolved in themselves, and why not gases, liquids and solids into solids? |
Why are we saying "A solvent is a liquid" here? The [[solution]] page clearly states that gases may be dissolved in themselves, and why not gases, liquids and solids into solids? |
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I agree; f.x. you dissolve gases or liquids in polymer matrices or in liquid crystalline phases for that matter. |
I agree; f.x. you dissolve gases or liquids in polymer matrices or in liquid crystalline phases for that matter. <small><span class="autosigned">—Preceding [[Wikipedia:Signatures|unsigned]] comment added by [[User:Pwt dk|Pwt dk]] ([[User talk:Pwt dk|talk]] • [[Special:Contributions/Pwt dk|contribs]]) 12:11, 5 January 2009 (UTC)</span></small><!-- Template:Unsigned --> <!--Autosigned by SineBot--> |
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== "Natural" solvents? == |
== "Natural" solvents? == |
Revision as of 12:12, 5 January 2009
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For solubility data, why is the temperature not given. Clearly, this affects solubility and therefore should be quoted. (question made by 80.5.160.8)
Actually, we don't have solubility data on this page :-) Cacycle 16:51, 5 Feb 2005 (UTC)
I was wondering if NaCl would dissolve in Ethanol. Would a polar solute be dissolved in a non-polar solvent?
Solvent is a liquid?
Why are we saying "A solvent is a liquid" here? The solution page clearly states that gases may be dissolved in themselves, and why not gases, liquids and solids into solids?
I agree; f.x. you dissolve gases or liquids in polymer matrices or in liquid crystalline phases for that matter. —Preceding unsigned comment added by Pwt dk (talk • contribs) 12:11, 5 January 2009 (UTC)
"Natural" solvents?
I can't find information here on "natural" solvents like Pine-Sol or Goo Gone. Any idea what they are chemically and why they can dissolve things that usually require nasty nonpolar solvents? —BenFrantzDale 19:40, 22 February 2006 (UTC)
Merge
See Talk:Solution#Merging Solution with Soluble and Solvent. --Unsigned comment added 22:45, 11 May 2006 by User:Black and White. Edited by User:Centrx on 24 May 2006.
Definition through itself
Isn't saying solvent dissolves defining it with the word itself. May-be merging with Solution will be a good idea, but if they don't get merged, I think the first sentence needs something else instead of dissolves.80.235.71.49 16:13, 6 September 2007 (UTC)
hey can a solvent dissolve a plasma? —Preceding unsigned comment added by Thunder god 15 (talk • contribs) 09:24, 11 October 2007 (UTC)
"A solvent is a liquid or gas that dissolves a solid, liquid, or gaseous solute, resulting in a solution." The entire article has this character; there is no information about what a solvent actually is, from a Physics of even physical Chemistry analysis. The article is absurdly circular.
Couple of points - Inert/recrystalisation
Although picky I think the following sentance needs re-wording
Solvents should therefore not react chemically with the dissolved compounds — they have to be inert. I can think of several instances in which solvents also act as reagents, most notably the birch reduction (both ammonia and ethanol), formation of nucleophiles such as alkoxides, to name but a few.
An important point which should also be noted (linked) is the process of recrystalisation.Dant1t 23:17, 22 October 2007 (UTC)dant1t
NO REFERENCE FOR PEROXIDE FORMATION
Please provide better mechanism including reference. Formation of peroxides is a critical safety issue. Specifically, your mechanism does not rationalize formation the peroxide. The oxygen radical needs to form a bond with the oxygen atom already present on THF, not on the carbon, right? How is the peroxide formed?
POLAR IN THIS CASE IS NOT NECESSARILY HYDROPHILIC
POLARITY scale also depends on the kind of chemistry being done. Dichlormethane, Ethyl acetate, diethyl ether, Chloroform and others are polar for uses in synthetic organic chemistry and DO NOT DISSOLVE IN WATER. Your statement is an incorrect oversipmlification. Polarity of solvents as you say later on the paragraph has to do with the dipole of the molecule and the solvent's ability to dissolve the solute in question and NOT IF THEY DISSOLVE IN Water. Lowry & Richardson, Mechanism and Theory in Organic Chemistry, 3rd Ed. Harper Collins Publishers (1987) p. 177 discusses and suggests nonpolar solvents have dielectric constant of less than approximately 15.
YOU REALLY NEED REFERENCES. —Preceding unsigned comment added by 141.214.17.5 (talk) 20:19, 29 January 2008 (UTC)
Actually, DCM, EA, ether, chloroform are non-polar solvents. Polar solvents really, should start from acetone, dmso, ethanol, methanol onward. These are the solvents of polarity ~ 0.4 and above. And yes, I am a synthetic chemist. --Rifleman 82 (talk) 01:38, 30 January 2008 (UTC)
Again, we need accepted peer reviewed references not the opinion of an annonymous editor purporting to be a chemist.
Plus, hey synthetic chemist, if you have time, could you provide the mechanism and reference for peroxide formation in THF. THanks. —Preceding unsigned comment added by 141.214.17.5 (talk) 21:38, 13 February 2008 (UTC)
Under links, Link for table 1 is broken.
elements as solvents?
Is there any Chemical element that is used as a solvent? I mean something like a particular substance dissolves in say Mercury (element)) and therefore Mercury is used as a solvent for commercial/research work. manya (talk) 04:39, 9 December 2008 (UTC)