It's not that low. In cold water it is .2 ppm and in warm water higher. (CRC Handbook specified as .00002 grams per 100 cc). Thus a gallon of cold milk could dissolve about .8 mg of silver if the sulfur is available. A family that goes through 3 gallons of milk a week could would dissolve about 2.5 mg of silver sulfide a week, and a 1 oz silver coin would lose 10% of its thickness in about 1000 weeks or 20 years. Thus coins that are done this way for a generation or two could become noticably thinner. The effect would be higher in a rain barrel since there is more water and it is warmer.
Marshall [email protected] wrote: > In a message dated 3/23/01 11:51:08 AM EST, [email protected] writes: > > << The only reaction I know of that silver will enter into easily is with > sulfur. Both silver sulfide and silver sulfate are slightly soluable, > so I suspect that the silver reacts with the sulfur, tarnishes, and the > tarnish slowly dissolves. If the milk was kept in a metal container, > then the reaction could have been galvanic, and actually made CS right > in the milk I suppose. > > Marshall > >> > > Marshall: I think you'll find that the absolute value of the free energy of > formation of silver sulfide is greater than that of silver sulfate which > means that once silver sulfide forms, it stays as silver sulfide. In > addition, I believe the Solubility Product of silver sulfide is incredibly > low, smaller than 10 ^ -20. Roger > > -- > 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]>
