The Kilcher Homestead is a 600 acre Pioneer Homestead that has been protected for perpetuity via a ConservatIon Easement. The Kilcher Family has also preserved the Historic Cabin and site as a LIving Museum.
Yes, negative pH is possible, but not in water as a solvent. The range of pH in water is 0 to 14 (to be more precise, it is -1.7 to 15.7, but for simplicity's sake, we start with the usual values.) Thus, what pH indicates is the ability of the acid to form H3O+, which can then donate a proton.
pH is the measure of the acidity or alkalinity of a solution. A lower pH indicates acidity while a higher pH indicates alkalinity. A pH value of 7 is considered neutral. Research on the effects of pH on enamel suggests that low pH and high acid concentrations lead to adverse side effects such as enamel erosion.