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Full-Text Articles in Physical Sciences and Mathematics
A Study Of The Temperature Of The Vapor Above A Boiling Salt Solution, John Andrew Palm
A Study Of The Temperature Of The Vapor Above A Boiling Salt Solution, John Andrew Palm
Honors Theses
The results obtained with the apparatus seemed to be quite conclusive that the temperature of the vapor above a boiling salt solution is the same as the temperature of the pure solvent.
Studies On Silicic Acid Gels: Measurements On Surface Tension During Setting, Louis Werthman
Studies On Silicic Acid Gels: Measurements On Surface Tension During Setting, Louis Werthman
Honors Theses
In this paper, results will be presented to show the change in surface tension during gelation of silicic acid solution. This research was undertaken with the belief that the change in surface tension during gelation might give further insight into the process of gel formation.
The Regulation Of Silicic Acid Gels, Louis W. Thompson Jr
The Regulation Of Silicic Acid Gels, Louis W. Thompson Jr
Honors Theses
The discovery of Hurd and Griffith, that a silicic acid gel will regel after breaking up and washing, is not true thixotropy, but it would be of interest to study this. This paper is concerned with just this matter, the regulation of silicic acid gels.
The Relation Between The Concentration Of Silica And Time Of Set At Constant Ph, Howard Sheffer
The Relation Between The Concentration Of Silica And Time Of Set At Constant Ph, Howard Sheffer
Honors Theses
Silicic acid gels result from practically any sol of hydrated silica, merely with the lapse of time. The gel must, however, contain a large enough concentration of silica to give sufficient strength or rigidity for the gel to set. A sol which contains less than .5 percent SiO2 will give a very weak gel, or no gel at all. Sols which are strongly alkaline will not set at all.
The Formation Of Silicic Acid Gels In Very Strongly Acid Solutions, Raymond William Barclay
The Formation Of Silicic Acid Gels In Very Strongly Acid Solutions, Raymond William Barclay
Honors Theses
In the past few years much work has been done at Union College in attempting to determine the mechanism of the setting of silicic acid gels. All of this work, however, had been done in alkaline, weakly acid, or moderately acid solutions, and practically no investigation of silicic acid gels in very strongly acid solutions has been made. The purpose of this research was to undertake such an investigation The effect of temperature and pH upon the time of set was studies. Three different temperatures were used, and the pH of all gels are studied was below 1. Concentrated hydrochloric …
Gels Of Hydrated Titanium Dioxide, David Wright Godfrey
Gels Of Hydrated Titanium Dioxide, David Wright Godfrey
Honors Theses
In 1823, Rose (1) reported the preparation of a week structured titania jelly by the treatment if fusion of sodium carbonate and titanium dioxide wit hydrochloric acid. In 1938, Jacober (3) prepared weak titania jellies by a method similar to that used by Klosky and Marzano. Furthering this previous research, Jacober went on to demonstrate that titanium, as might be expected from its close similarity to silicon and its position in the same periodic family, shows a linear relation between the reciprocal of absolute temperature and the logarithm of the time of set of its gels, as silicon does.
Heats Of Solution In Liquid Ammonia, Herbert F. Zuhr
Heats Of Solution In Liquid Ammonia, Herbert F. Zuhr
Honors Theses
This paper will present the heat of solution of methyl ammonium chloride as a function of the concentration at -33 degrees. The heats of other amine and imine hydrochlorides, organic salts will also be included, as will the preparation of certain organic salts and calibration data.
Heats Of Solution In Liquid Ammonia, Joseph Sottysiak
Heats Of Solution In Liquid Ammonia, Joseph Sottysiak
Honors Theses
Water, chemically speaking, is the most important individual substance known. Water occupies an outstanding position among solvents. In its capacity as a solvent for salts and as an ionizing agent, it is in a class by itself. Of all known liquids, ammonia most closely resembles water in those properties which make water outstanding among solvents. As a solvent, ammonia is secondary to water, however; many salts insoluble in water dissolve readily in liquid ammonia. Solutions of salts in liquid ammonia are excellent conductors of electricity. Ammonia unites with salts to form ammonia of crystallization. It solvates ions. It is an …