Ivan: In a message dated 00-04-25 12:02:03 EDT, you write: << A rise in CO2 absorption and hence a lowering in pH, yes?
Well, then measure the pH vs. time and tell us what you get. <<No, why would I? I have no suspicion of these products in my CS, which is neutral or slightly alkaline. The HVAC arc electrolysis method is known to create up to 15% silver oxide (hydroxide). If this is correct then is it possible that this is the cause of a surfiet of hydronium ions, hydronium ions being, as far as I know the only measure of pH.>> What evidence can you provide that 15% silver oxide (hydroxide) is produced when CS is prepared from HVAC? And even if your statement were correct the dissociation of AgOH would not produce hydronium ions. << Sorry to hear that Roger because it is certainly true. If you were to place a piece of silver wire in pure water then there will be a constant (although very small) dissolusion and reabsorption of silver ions to and from the water at the wire surface.>> Yes, and the reaction would be, Ag(s) + H2O = AgOH(s) + 1/2H2 AgOH(s) = Ag+ + OH- When you write a chemical reaction both mass and charge MUST BALANCE. If not you have an made an error. It's really that simple. Most chemists would say that these reaction doesn't go to the right, but I'll grant you that a solubility product can be calculated from the standard free energies of formation of reactants and products from reactions (1) & (2), and, therefore, the ionic concentration of Ag can be calculated. This value would be exceedingly small, but perhaps experimentally quantifiable. A friend of mine once boiled a silver round for I don't know how many hours and got about 1 ppm silver as I recall. In any case, the above chemical reactions clearly shows both the thermodynamic principle of conservation of mass and energy (that is, all mass and ionic charges are balanced) <<Silver ions can be captured in water having been ionised in a plasma, which I have done myself.>> I think you have to be very careful here about the assumption that ALL SPECIES within a plasma are ionic. For example, the constituents of solar wind which are generated at millions of degrees within the sun are comprised of 90%H, 10%He with a SMALL FRACTION of C, O and Fe. So I would be very cautious about assuming the the silver electrode forms ionic silver within a plasma arc. My guess is that electrons are NOT stripped from the silver atoms, but rather excited to higher energy levels, and then give off light when these electrons fall back to ground state. For example, METALS are "sputtered" as thin layers on substrate; to my knowledge while enough energy is absorbed to generate a metal VAPOR PHASE, no metal IONS are produced during this process. My guess is that it would take a huge amount of energy within a plasma to produce silver ions. >> Place a piece of aluminium foil in a sample of CS, if the sol contains Ag ions then they will plate out releasing Al ions into the water.<< What about a statically charged aggregated silver particle (let's call it asp) reacting as such, Ag(asp)+ + Al -----> Ag + Al+ The colloidal silver cluster has now been stripped of its charge and drops out of suspension. >> When salt (NaCl) is dissolved in water the components separate and are solvated, surrounded by water molecules, and move freely having no attraction for each other.<< Are you telling us that the sodium ions can migrate away from the chloride ions? NO TRUE!! The sodium ions and chloride ions are HIGHLY attracted to one another. >> Only ions can carry a charge in water. The electrostatic charge of particles in water is the loss or gain of electrons just as it is with ions. In fact an electrostatically charged particle is an ion.>> If that were true then colloids of silver would behaves the same as silver ions produced from silver salts. Practically everyone on this forum knows there is a huge difference in behavior between these two species. >> An Ion Selective Electrode will measure only the ions it is sensitive to and nothing else. H2O2 will react with metallic silver but not ionic silver.>> Are you saying that the reaction, 2AgNO3 + H2O2 ----> Ag2O + 2HNO3 would not go to the right? Why not? -- The silver-list is a moderated forum for discussion of colloidal silver. To join or quit silver-list or silver-digest send an e-mail message to: [email protected] -or- [email protected] with the word subscribe or unsubscribe in the SUBJECT line. To post, address your message to: [email protected] Silver-list archive: http://escribe.com/health/thesilverlist/index.html List maintainer: Mike Devour <[email protected]>
