Talk:Precipitation (chemistry)

message: This isn't very good, and reads like it has been written by a grade schooler. (anon user)
: Your opinion is noted, though you have provided no details of what is wrong with the article. If you feel it needs improvement and you have some knowledge of the topic, feel free to make some changes. if the changes are major, please seek consensus for them on this page first. Euryalus 23:19, 6 May 2007 (UTC)
thread_title: Untitled

message: "After evaporation, condensation occurs and will slowly turn into a cloud." - This is at the end of the main part of the article and it doesn't make any sense to me. I suggest a deletion. Abcjared 06:27, 23 September 2007 (UTC)
thread_title:  Where Does this come from 

message: Perhaps it should be explicitly stated that "supernate" is synonymous with "supernatant".  —Preceding unsigned comment added by 136.186.1.188 (talk) 00:17, 15 October 2008 (UTC)
thread_title:  "Supernatant" redirects to this page, but is not mentioned. 

message: Hello,
Is it possible to elaborate more on primery vs. secondary precipitation?
For example, in relation to crystal growth.
Thanks, Omer. http://sites.google.com/site/omermar/ 07:34, 27 May 2009 (UTC)
thread_title:  Primery and secondary 

message: Although I am not familiar with precipitation, a document I am looking at seems to indicate that the substance used to cause precipitation is called a "precipitant," "precipitating agent," or the like. 67.101.6.76 (talk) 05:59, 7 January 2011 (UTC)
thread_title:  precipitant 

message: What about the very common practice, often encountered in textbooks, of representing the precipitation of solids out of the liquid pase with a downwards-pointing arrow (↓)?
--Tomásdearg92 (talk) 13:58, 4 December 2011 (UTC)
thread_title:  Representation using chemical equations 

message: Substituted at 03:21, 30 April 2016 (UTC)
thread_title: Assessment comment

message: This article could be easily expanded by the addition of a section that talks about how precipitation is sometimes induced by the addition of an organic solvent. For example, adding an equal volume of methanol to seawater will cause the salt in the water to precipitate out. There's an interesting paper here that mentions in its abstract that "all chemists are very familiar with the
notion that adding an organic solvent to an aqueous solution induces the rapid precipitation of dissolved inorganic salts". Daemyth (talk) 23:29, 7 November 2016 (UTC)
thread_title:  Precipitation upon addition of organic solvent 

message: There should be examples Daksh777 (talk) 07:04, 6 February 2019 (UTC)
thread_title:  Examples of chemical reaction 

message: Without sufficient force of gravity (settling) to bring the solid particles together, the precipitate remains in suspension.  After sedimentation, especially when using a centrifuge to press it into a compact mass, the precipitate may be referred to as a 'pellet'. Precipitation can be used as a medium. The precipitate-free liquid remaining above the solid is called the 'supernate' or 'supernatant'.  Powders derived from precipitation have also historically been known as 'flowers'.  When the solid appears in the form of cellulose fibers which have been through chemical processing, the process is often referred to as regeneration. Huzaifa abedeen (talk) 09:57, 28 November 2020 (UTC)
thread_title:  I removed this 

message: I have tried to restructure somewhat the outline of this page in a more consistent way in order to address the mentioned issues (multiple topics and unfocused content), i.e., by reordering informations according to: 
* Inorganic chemistry
** Aqueous solutions
** Metallurgy and alloys
* Organic chemistry
* Biochemistry
* Industrial uses
* Other uses
More copy edit of the page is still needed. Feel free to still improve the page and to remove the tag when it will have attained a sufficient quality. Shinkolobwe (talk) 21:08, 5 May 2021 (UTC)
thread_title:  Multiple topics and unfocused content