I originally wrote: "What is the overall result of adding sodium hydrogen carbonate to .4 PPM TDS distilled and then using that water to make CS?"
I should have included: The baking soda is added to raise the TDS to 4.5 PPM. Jim -----Original Message----- From: Jim Holmes [mailto:[email protected]] Sent: Tuesday, December 20, 2005 9:43 PM To: [email protected] Subject: RE: CS>Adding bicarb of soda to water for brewing What is the overall result of adding sodium hydrogen carbonate to .4 PPM TDS distilled and then using that water to make CS? Jim -----Original Message----- From: Marshall Dudley [mailto:[email protected]] Sent: Tuesday, December 20, 2005 11:17 AM To: [email protected] Subject: Re: CS>Adding bicarb of soda to water for brewing Ignore this message, all the reactions are not thermodynamically possible. According to those more knowledeable than I on this what you would end up with would be CO2 continuing to exist in the water, both as CO3-- and HCO3-, with no evolution of CO2 at all. Nice idea, but unworkable. Marshall Marshall Dudley wrote: > Adding a very small amount of baking soda to distilled water that has picked up > some CO2 and formed carbonic acid is very interesting to analyze. > > CO2 + H2O -> H2CO3 or carbonic acid > NaHCO3 + H2CO3 -> NaOH + 2CO2 + H2O > > If you don't add enough bicarb to neutralize all the carbonic acid, then you > can get this reaction as well: > > 2NaOH + H2CO3 = Na2CO3 + 2H2O > > but then sodium carbonate should react with carbonic acid as well producing: > > Na2CO3 + H2CO3 -> 2NaOH + 2CO2 > > Which puts us right back to the Sodium Hydroxide again. > > So unless I am mistaken, the smallest pinch possible of baking soda (or lye) > would neutralize 100% of the carbonic acid in distilled water that has absorbed > CO2, and as long as no more is added than is necessary to cause all the CO2 to > be released, the effect will be a DECREASE in carbonate, not an increase. The > sodium hydroxide acts as a catalyst to release CO2. I have put this question > to some chemists for confirmation and should have a reply shortly. > > This appears to be a very interesting topic that needs more study. > > Marshall > > -- > 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] > > Address Off-Topic messages to: [email protected] > > The Silver List and Off Topic List archives are currently down... > > List maintainer: Mike Devour <[email protected]> >
