Here is a reference that shows the solubility of AgOH to be more than 100 ppm if the ph is less than 9!
How the heck do you get known good information when the "experts" don't seem to be able to agree? Marshall Ode Coyote wrote: > Oh Lordy > Yet another anomoly. > When reagent manufacturers can't agree... > Could be a factor involved with "this" process vs just adding water to AgOH? > That 13 PPM keeps on popping up. > Could be, Marshall > > Ode > > At 11:08 AM 1/24/2005 -0500, you wrote: > > > >I have found several sites that claim that silver hydroxide is insoluble. > However > >I also have found the following, the second one give in fact, the > solubility of > >silver hydroxide to 3 significant digits as 13.3 ppm. > > > >This link http://chemmovies.unl.edu/chemistry/smallscale/SS063c.html I > believe > >intends to say that silver chloride is less soluble than silver hydroxide. > That > >would mean it has a solubility greater than .89 ppm. See #4. However they > did > >mess it up and say that silver hydroxide is less soluble than silver > hydroxide by > >mistake. > > > >According to http://www.silver-colloids.com/Papers/Solubility_Products.PDF > the > >solubility of silver hydroxide is 13.3 ppm, which is what we often quote > as the > >stable limit for ionic silver on this list. I feel this support the > notion that > >the silver in EIS is predominately silver hydroxide. > > > >http://www.northland.cc.mn.us/Chemistry/solubility_products.htm lists silver > >hydroxide as having a solubility (Ksp) of 2.0X10-8, compared with > 1.6X10-10 for > >silver chloride. That would make silver hydroxide soluble than silver > chloride, > >but the exact difference would depend on the stoichiometry of the > precipitant. > > > >http://home.snu.edu/dept/chemistry/syllabi/ARCHIVES/CHEM1224/LABEXP~1/SILVE > R~1.PDF > >shows the solubility Ksp of silver hydroxide to be 2.0 X 10-8 and silver > chloride > >to be 1.8 X 10-10 which is close to what the above reference shows it. > > > > I feel these support the notion that the silver in EIS is predominately > silver > >hydroxide which has a low solubility, but one that is sufficient for > typically > >EIS. > > > >Marshall > > -- > No virus found in this outgoing message. > Checked by AVG Anti-Virus. > Version: 7.0.300 / Virus Database: 265.7.2 - Release Date: 1/21/2005 > > No virus found in this incoming message. > Checked by AVG Anti-Virus. > Version: 7.0.300 / Virus Database: 265.7.2 - Release Date: 1/21/2005 > > -- > No virus found in this outgoing message. > Checked by AVG Anti-Virus. > Version: 7.0.300 / Virus Database: 265.7.2 - Release Date: 1/21/2005 > > -- > The Silver List is a moderated forum for discussing Colloidal Silver. > > Instructions for unsubscribing are posted at: http://silverlist.org > > To post, address your message to: [email protected] > Silver List archive: http://escribe.com/health/thesilverlist/index.html > > Address Off-Topic messages to: [email protected] > OT Archive: http://escribe.com/health/silverofftopiclist/index.html > > List maintainer: Mike Devour <[email protected]>
