Reaction Between Copper Sulphide & Sulphur Trioxide

103-10

Studies of Phosphazenes: Part II*-Reactions of Hexachlorocyclotriphosphazatriene with N-Methylaniline

823-82

Oxidation by chloramine-T. Part II. Redox potential of chloramine-T-sulphonamide systems

This article does not have an abstract

The chemical behaviour of sulphur compounds. Part III. Kinetics of the gaseous reaction between hydrogen sulphide and sulphur dioxide

Certain sulphides, in presence of a small amount of moisture were found to catalyse the reaction between hydrogen sulphide and sulphur dioxide. The kinetics of this reaction was studied in a closed system, using an all-glass, gas circulation pump. The partial pressure of water in the reacting system was maintained constant with the aid of a hygrostat [mixture of a hydrated salt and its anhydrous form (or lower hydrate)]. The higher the partial pressure of water, the greater was the velocity of reaction, for a given catalyst. Of the sulphides employed, cobalt thiomolybdate was found to be the best catalyst. Cobalt sulphide and molybdenum sulphide were less efficient. Next in order of efficiency, was silver sulphide. Boron trifluoride and anhydrous aluminium chloride were found to have no catalytic effect on the union between hydrogen sulphide and sulphur dioxide. The mechanism of the reaction could be explained on the basis of the formation of thiosulphurous acid, as the primary product

Oxidation by chloramine-T. Part I. Reaction between hydrogen sulphide and chloramine-T

This article does not have an abstract

The energy balance in the Ramdas layer

On calm clear nights, air at a height of a few decimetres above bare soil can be cooler than the surface by several degrees in what we shall call the Ramdas layer (Ramdas and Atmanathan, 1932). The authors have recently offered a logical explanation for such a lifted temperature minimum, together with a detailed numerical model. In this paper, we provide physical insight into the phenomenon by a detailed discussion of the energy budget in four typical cases, including one with a lifted minimum. It is shown that the net cooling rate near ground is the small difference between two dominant terms, representing respectively radiative upflux from the ground and from the air layers just above ground. The delicate energy balance that leads to the lifted minimum is upset by turbulent transport, by surface emissivity approaching unity, or by high ground cooling rates. The rapid variation of the flux emissivity of humid air is shown to dominate radiative transport near the ground

Solid-Gas Reaction between Tricalcium Phosphate & Anhydrous Hydrogen Chloride

20-2