The Reactions of SO3and SbF5with Fluorosulfuric Acid

Abstract
Fluorosulfuric acid is a good donor of SO3 and as a result it reacts with SbF5 to give HSbF6 and SO3. Solutions of SO3 and SbF5 in fluorosulfuric acid exhibit the same cathodic waves at platinum and platinized platinum electrodes. Electrochemical reductions at a potential corresponding to the plateau of these waves produces SO2 and not H2. We have investigated the reactions of SO3 and SbF5 with flurosulfuric acid.