In a message dated 10/18/2001 9:55:12 AM Eastern Daylight Time, [email protected] writes:
> Subj:CS>Bubble or Stir? > Date:10/18/2001 9:55:12 AM Eastern Daylight Time > From: [email protected] (Kevin Nolan) > Reply-to: <A HREF="mailto:[email protected]";>[email protected]</A> > To: [email protected] > > > > > Bubbling sounds attractive from the standpoint of simplicity; considerably > less effort than building a decent stirrer arrangement. However it would > seem to present a potential problem re oxygenating the water (which after > all is what fish tank bubblers are all about). Could this convert a > substantial portion of the CS (ionic and/or particulate) into silver oxide, > which by all and sundry is deemed an ineffective form? If the oxide is > stable and fine enough, presumably the solution would remain clear - ie no > tell-tale signs to go by. Please, no "bubbled CS works fine for me" stuff - > maybe you just left enough silver to do the job, but lost 90% of what was > potentially there. What is needed is input from some folks with real > knowledge of the relevant chemistry. Any takers? > > regards, Kevin Nolan <A > HREF="mailto:[email protected]";>[email protected]</A> > Kevin: I put together a three part mini-course in aqueous chemical equilibria that predicts the species that are stable in a LVDC CS product. I'll be happy to send it to you. I believe it answers your question as to what happens to ionic silver in equilibrium with air. The only assumption required is that equilibrium conditions exist, but even THAT assumption isn't really necessary to examine the likelihood of other species forming as well. Maybe I should discuss such a scenario in another "class", assuming there's anyone left who's willing to give it a go. Roger
