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Re: Rocks

In a message dated 6/23/2002 2:58:28 PM Eastern Daylight Time, r_pooley@hotmail.com writes:

If the vinegar trick works on sand....will it also work on rocks to see
if they will change your Ph? I also don't have a supply of car batteries
like Dave does. Rich

Yes,... that is where I first heard of it being used was to test a rock. Maybe one of the resident chemist will explain why vinegar can be used to tell if the rock has a pH raising quality. The only test I remember from school was adding vinegar and baking soda would actually blow out a fire.