Feb 022018
Well, now, this stuff sounds like fun.
The acid is often said to contain “naked protons”, but the “free” protons are, in fact, always bonded to hydrogen fluoride molecules to make the fluoronium cations (similar to the hydronium cation in aqueous solution).[5] It is the fluoronium ion that accounts for fluoroantimonic acid’s extreme acidity. Fluoroantimonic acid is 10^16 (10 quadrillion) times stronger than 100% sulfuric acid.
Jeepers.
Like most strong acids, fluoroantimonic acid can react violently with water, owing to the exothermic hydration. Consequently, it cannot be used in aqueous solution, only in hydrogen fluoride as solvent.
Acidity (pKa) = −31.3
Not to be taken rectally, I guess.