Yes, you guys have it nailed. The higher the solute content of a solution the lower the freezing point. So when you freeze sea water to a certain temperature ice crystals will form, further concentrating the unfrozen brine and further lowering the temperature at which that brine will freeze. One must freeze sea water to -50C at which point 99.7% of the water has frozen, and 99.7% of the sodium and 95.5% of the chloride have precipitated.
In the Popsicle a high proportion of the water of the sugary solution has frozen and concentrated the sugar and flavour to a syrup which is still liquid, but is found throughout the ice-lattice, held there by capillary action I suspect. Concerning CS, at some point the solution becomes so concentrated that the silver ions will precipitate out as a salt... silver hydroxide/oxide I guess. I wonder if that can be resuspended into an ionic CS again. If one heats silver oxide above 150C the oxide decomposes... to what metallic silver? Could one make a fine metallic silver powder this way? Mind you, it would take a lot of CS to make a gram of silver powder. Cheers Ivan. > -----Original Message----- > From: Dean Miller [mailto:[email protected]] > Sent: Monday, 16 December 2002 8:41 a.m. > To: [email protected] > Subject: Re: CS>Frozen CS > > > Hi Marshall, > > On Sun, 15 Dec 2002 11:39:48 -0500, Marshall Dudley > <[email protected]> wrote: > > >You can freeze sea water and get virtually pure water in > the ice. All the > >dissolved salts in sea water are ionic. I see no reason > well water should be > >different. > > I agree, freezing salt water will produce mostly pure water > ice. But > ... have you ever had a Popsicle? :) Ivan can probably > tell us what > conditions are necessary to freeze substances along with the ice. > > If I can find the time, I'll try freezing some CS and then melt and > test it's ppm rating (now to find a glass ice cube tray). > > -- Dean -- from (almost) Des Moines -- KB0ZDF -- The silver-list is a moderated forum for discussion of colloidal silver. Instructions for unsubscribing may be found at: http://silverlist.org To post, address your message to: [email protected] Silver-list archive: http://escribe.com/health/thesilverlist/index.html List maintainer: Mike Devour <[email protected]>
