- 1 Welcome
- 2 Image Tagging for Image:Gaenselieselbrunnen.jpg
- 3 Disputed fair use rationale for Image:Acp cover.jpg
- 4 Thermodynamik chemischer Vorgänge
- 5 Volume concentration/fraction
- 6 Orphaned non-free image File:Acp cover.jpg
- 7 Henry′s law
- 8 Happy New Year
- 9 Isotopic atmospheric chemistry
- 10 Disambiguation link notification for July 13
- 11 Osmolarity vs osmolar concentration
- 12 Raoult's law
- 13 Disambiguation link notification for November 4
- 14 Eponymous theory
- 15 Persistence of percent concentration
- 16 Disambiguation link notification for June 4
- 17 Indexes
- 18 Rollback
Image Tagging for Image:Gaenselieselbrunnen.jpg
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Apparently, you can buy it here:
Indeed, the IUPAC web page is the same for both. To me, only "volume fraction" seems to be well defined. In the absense of a proper definition of "volume concentration" I have to assume that it is exactly the same...--RolfSander (talk) 17:48, 5 September 2011 (UTC)
It also seems that for non-ideal mixtures like alcoholic ones the volume fraction is easy to calculate but difficult to measure due ton volume non-additivity while volume procent/concentration is easy to measure.(?)--MagnInd (talk) 23:14, 28 January 2012 (UTC)
Orphaned non-free image File:Acp cover.jpg
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What data are there concerning Henry′s law constants for gas solubilities in partial miscible multiphasic liquids? And how is the expression of the law in these situations? Is the constant additive? (consisting from contributions give by the solubilities in each of liquids and the partial miscibility domain). (of course taking activities into consideration when necessary).--MagnInd (talk) 17:10, 29 November 2011 (UTC)
- I'm sorry but I've only looked at Henry's law for aqueous solutions (I'm an atmospheric chemist: distribution between air and clouds). I cannot help you here--RolfSander (talk) 19:32, 4 December 2011 (UTC)
Is the solubility of gas in aqueous solutions, say oxigen, influenced by presence of electrolytes comparatively to distiled water and how? Is the value of the constant from the law different or activity coefficient comes into play in this case?--MagnInd (talk) 21:12, 6 December 2011 (UTC)
Solubiity of gases decreases with increasing salt concontration of the solution. To see how it is linked to Henry's law, I suggest you google "Sechenov equation" to find out more.--RolfSander (talk) 21:32, 6 December 2011 (UTC)
Thanks for the tip. Perhaps a redirect would be useful Sechenov equation and the article Henry law should be added infos concerning the influence of electrolytes found on google search.--MagnInd (talk) 12:21, 9 December 2011 (UTC)
- If you want to add a Sechenov section to the Henry's law page, go ahead! I currently have too many things to do to start with this.--RolfSander (talk) 19:34, 10 December 2011 (UTC)
Happy New Year
Isotopic atmospheric chemistry
- Deuterium (and other isotopes) are mainly used as a diagnostic tool:  --RolfSander (talk) 11:17, 13 February 2012 (UTC)
Hi. When you recently edited Relative atomic mass, you added a link pointing to the disambiguation page Resolving power (check to confirm | fix with Dab solver). Such links are almost always unintended, since a disambiguation page is merely a list of "Did you mean..." article titles. Read the FAQ • Join us at the DPL WikiProject.
Osmolarity vs osmolar concentration
When there are several names, I always prefer the name that IUPAC recommends: , i.e. osmotic concentration. They say it was "formerly called osmolarity". A link to this goldbook page should probably be added to the article as well.--RolfSander (talk) 20:02, 14 November 2012 (UTC)
What is the exact statement of Raoult's law for aqueous electrolytes considering van't Hoff factor? It seems that there is a persistent erroneous statement neglecting electrolyte dissociation even in meteorology and atmospheric chemistry sources.--MagnInd (talk) 20:15, 1 November 2012 (UTC)
Hi. Thank you for your recent edits. Wikipedia appreciates your help. We noticed though that when you edited Vapor quality, you added a link pointing to the disambiguation page Mass fraction (check to confirm | fix with Dab solver). Such links are almost always unintended, since a disambiguation page is merely a list of "Did you mean..." article titles. Read the FAQ • Join us at the DPL WikiProject.
Persistence of percent concentration
Regarding the persistence of the name percent concentration, how was mass fraction called when encountered it first time in the elementary textbook? Was it called mass fraction or percent concentration?--MagnInd (talk) 23:28, 11 March 2013 (UTC)
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Hi, I noticed that you requested rollback right at WP:PERM. That right can only be used when the edit is obvious vandalism. The example you mentioned is not obvious vandalism because the user might be thinking that their edits are helpful to wikipedia. I want to tell you that there are other ways of reverting consecutive edits by same user. You can use Twinkle, it gives non rollbackers the ability to rollback, you can enable it in preferences. Another way is to edit the version, which is in good condition. You can see second method in detail here. Thank you Supdiop talk 10:16, 10 June 2015 (UTC)