itssu...@aol.com wrote: > Hi Old Bob: > > My Grandmother always kept a silver dollar in the milk, and one in the > rain > barrel out by the barn. Grandma was born in 1897, so she might have > been > considered "old Americana." Over the years, those silver dollars got > pretty > thin and worn looking. > I have no idea what chemical reaction might have taken place with > these old > silver dollars.
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
