The Fluorosulphuric Acid Solvent System

Abstract

<p>A cryoscopic technique for the investigation of solutions in fluorosulphuric acid has been developed, and the cryoscopic constant for the solvent has been determined.</p> <p>Conductimetric measurements, cryoscopic measurements and n.m.r. spectroscopic studies have been used to determine the mode and extent of ionization of antimony pentafluoride in fluorosulphuric acid. The reactions in fluorosulphuric acid of antimony pentafluoride with sulphur trioxide, and of boron trifluoride with sulphur trioxide have also been investigated.</p> <p>Solutions of arsenic trifluoride in fluorosulphuric acid have been investigated by conductimetric measurements. Conductimetric and cryoscopic studies have been made on solutions of the supposed compound "2AsF·3S0".</p> <p>Conductimetric and transport number measurements on solutions of barium fluorosulphate in fluorosulphuric acid have been used to calculate the mobility of the fluorosulphate ion. The mobility of the fluorosulphuric acidium ion has also been determined, and the autoprotolysis constant of fluorosulphuric acid calculated .</p> <p>In order to obtain information on self-dissociation reactions of fluorosulphuric acid, cryoscopic studies were made on solutions of water, sulphur trioxide, and potassium fluoride.</p>