Showing papers in "Transactions of The Faraday Society in 1964"

Contact glow-discharge electrolysis

Abstract: When electrolysis of an aqueous solution is carried out using a thin wire anode then, under suitable conditions of energy dissipation, local heating can produce a stable sheath of solvent vapour around the electrode through which current flows as a glow-discharge if the applied voltage is sufficiently high. The conditions governing the breakdown of conventional electrolysis have been investigated, and the phenomenon has been found to be one of general occurrence with any electrolyte. The chemical effects of this contact glow-discharge electrolysis are closely similar to those produced by passing a discharge to the surface of the solution at reduced pressure, and they resemble the alpha radiolysis of water. With dilute sulphuric acid the main product in solution is hydrogen peroxide which is initially formed with a yield of 1.8 equiv./faraday but eventually attains a stationary concentration. By using ferrous sulphate as a free radical savenger, the primary yield of oxidizing species has been found to be about 8 equiv./faraday.

Mass spectrometric determination of the dissociation energy of the molecules MgO, CaO, SrO and Sr2O

Abstract: The dissociation energy of the molecules MgO, CaO, SrO was determined: D0°(MgO) = 86±5; D0°(CaO) = 93±5; D0(SrO) = 102±5 kcal/mole. The ground state was considered to be 1Σ. This choice is discussed. A discussion of the literature values for D0°(MgO, CaO, SrO) is made. The molecule Sr 2O was identified and its atomization energy determined: ΔH0°, at(Sr2O) = 194±6 kcal/mole.