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/SILVER~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 Ode Coyote wrote: > ## Well sure. The questions pertain more towards what happens if the > silver ion 'doesn't' find a hydroxl ion and why, maybe, it's only a strong > tendency rather than a mandate. > If making stable compounds were an 'absolute mandate', the CS water > probably wouldn't have such a long unstable state. > > If a silver ion can 'associate and orientate' itself with the hydroxl > portion of a 'non' dissociated water molecule without actually making a > compound...that might could prevent a hydroxl ion from finding it to some > degree by hiding it's electron hole to some degree. > > OH is a gas? Could it just bubble off to some extent, leaving 'some' > silver ions with nowhere to go, leaving them with choice #2. [Loose > association with an occupied OH vs tightly bonded compound with a > previously unoccupied OH]? > If AgO can be formed, apparently there are some O1 atoms running about > looking for something to do and they might not all do any one given > thing...same for the hydrogen? > Could a Hydroxl ion 'Not' find a silver ion and get together with another > hydrogen atom to turn back into water as 'its' choice #2? > > It's my vauge and maybe erronious understanding that a silver particle can > accumulate a minus charge from the Zeta. It's probably not quite the same > as an ionic charge, but could that minus zeta be similar enough have a > stabilizing effect and attraction for a plus charged silver ion? > If some ions are orienting towards an occupied OH in a water molecule and > are also attracting zeta charged metal, I see a sort of potential for a > 'charge protected' crystal lattice structure forming around a water > molecule as its nucleus...and another oriented varient using a silver oxide > molecule. > > Silver hydroxide is virtually insoluable in water [listed as > "insoluable"]...one of the few hydroxides that aren't extremely soluable in > water. If it's that insoluable, it doesn't seem likely to concentrate in > solution. > It's also stable enough that you can buy it in powder form. > That doesn't suggest spontanious conversions to silver oxide to me. > > Another thing that doesn't get mentioned much: > Many of the various deposits found in various places, regardless of color, > will leave a shiny silver smear when wiped onto a surface and there's that > silver slick that sometimes forms on top. There's definitely some metallic > silver running about. > Ode > > At 03:17 PM 1/20/2005 -0500, you wrote: > > > >Ode Coyote wrote: > > > >> Dissolved Compounds still remain those compounds and don't change into > >> something else when the water is removed. > >> A free silver ion isn't likely to be very stable and very much wants to > >> share an electron with something. > > > >Solutions by their very nature are always neutral. If you have an Ag+ ion, > >there has to be a (-) ion to balance it. The two together will define the > >compound. For freshly made EIS the negative ion is the hydroxyl ion, IE OH-, > >so the silver compound in EIS is actually silver hydroxide. At higher > >concentrations, silver hydroxide tends to become unstable, and will > >spontaneouly convert to silver oxide. This could be part of the aging > process > >that occurs when EIS sits, not sure. > > > > >> > >> > >> Question: > >> Does it HAVE to "share", or can it's desires be passified as an 'onlooker' > >> or 'groupie', so to speak? > >> Can a free silver ion 'associate' [identify?] itself... around and with... > >> a water molecules opposite valence oxygen componant and become at least > >> 'more' stable without actually becoming a 'compound' made from out of that > >> water molecule? ...a protective attraction vs an absolute reaction.. > > > >A silver ion will tend to attact the OH portion of a water molecule, > producing > >silver hydroxide. The remaining H will find a matching one, and form H2 > which > >may remain dissolved or be outgassed over time. > > > >> > >> > >> Can a cluster of silver atoms that include one or more ions on it's surface > >> to present an ionic 'appearance' to the water molecules also be included in > >> such an attraction? > > > >A cluster of silver atoms do often obtain a charge. They are not ions per > say > >I don't believe but just a cluster with a charge. The charge is referred > to as > >the zeta when it is measured. The higher the charge or zeta, the more stable > >the colloidal portion is. If they have no charge, then they will precipitate. > > > >Marshall > > > >> > >> > >> Warning: Any in depth explanation one way or the other will probably > >> confuse me. > >> Simple answers? Yes, no , maybe sometimes? > >> > >> Ode > >> > >> -- > >> No virus found in this outgoing message. > >> Checked by AVG Anti-Virus. > >> Version: 7.0.300 / Virus Database: 265.7.1 - Release Date: 1/19/2005 > >> > >> -- > >> 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]> > > > > > > > > > > > >-- > >No virus found in this incoming message. > >Checked by AVG Anti-Virus. > >Version: 7.0.300 / Virus Database: 265.7.1 - Release Date: 1/19/2005 > > > > > > -- > No virus found in this outgoing message. > Checked by AVG Anti-Virus. > Version: 7.0.300 / Virus Database: 265.7.1 - Release Date: 1/19/2005 > > 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
