Ode Coyote wrote: > Since silver ions form oxides when the water evaporates and leaves filters > brown, perhaps filtering part of a batch that has been treated with > peroxide and part of the same batch that has not, will reveal something > interesting.
I am not sure you can use color by looking at any powder to determine it's composition. A better way would be to add warm distilled water, and see what dissolves. If it is silver oxide it will dissolve, and if it is metallic silver, it will not. However, I do agree that the ionic portion most likely will reduce to silver oxide because silver ions in water form a loose association with the OH- radicals, and when you evaporate the water, this will become silver hydroxide, which spontaneiously breaks down into silver oxide when in a concentrated form. > > If it's mostly metallic silver being formed..from whatever source, the > staining should be less distinct. > If oxides are dissolved 'and' being formed as the water evaporates, the > staining should be much browner. I don't quite follow you here. > > > Since I decant as needed rather than filter and have for years, I don't > have any used filters around to check or make any observations on to get > clues built up over time. > I'll have to start from scratch. > > Then treating [with peroxide] the stains made by filtering at various > times with various additions , might reveal something. I agree, I believe that all the ionic portion when you do this will be silver oxide. > > > One thing that might be a clue is that batch I made using peroxide as a > 'starter'. It absolutely made silver particles..big and shiny ones, almost > big and shiny enough to shave by. [well, that's a exaggeration, but they > would have made for a good metalflake paint job and were very pretty like a > snow scene paperweight when shook up.] > They eventually degraded into black oxide balls on the bottom and a yellow > cast to the water that wasn't there before but it took several > months...maybe a year.. sitting in a South facing window sill in a clear > glass jar. The effect of hydrogen peroxide is quite complicated, I think all the following occur, at different rates: 2(Ag+ OH-) + H2O2 -> Ag2O + H2O2 + H2O IE. H2O2 is a catalyst and unchanged by this since the two OH radicals combine and replace the original molecule Ag + H2O2 -> Ag2O + H2O Metal converts to silver oxide Ag2O + H2O2 -> 2Ag + H2O + O2 silver oxide converts to metalic pairs of silver atoms. And there could be others that involve AgO a less abundant silver oxide as well. Marshall > > Ode > > -- > 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]>
