More Geek Chemistry.

[swestrup]

Did you know that the strongest known acid is Fluoroantimonic Acid and its 2x10^19 times stronger than 100% Sulphuric Acid. pH only applies to aqueous solutions and this particular superacid explodes violently on contact with water, so it doesn't have a pH. Its pKa value (the non-aqueous equivalent, based on the same scale as pH) is -25!