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Full-Text Articles in Physical Sciences and Mathematics
Experiments In General Chemistry, John Howard Adams
Experiments In General Chemistry, John Howard Adams
Honors Theses
The investigations described here in are concerned with several problems. The original investigation dealt with a common qualitative test for the presence of cobalt ion. The test involves the use of alcoholic ammonium thiocyanate which results in the formation of the unstable blue complexion Co(SCN)4.
The Detection Of Pesticide Residues In Water Supplies, David Lee Barry
The Detection Of Pesticide Residues In Water Supplies, David Lee Barry
Honors Theses
The use of organic chemicals as pesticides has increased greatly in recent years and continues to do so, since these pesticides offer advantages of greater effectiveness, more selectivity, and lower toxicity to mammals, than the previously used inorganic pesticides, such as arsenic compounds. The problem of pollution of water supplies by these pesticides becomes more important with this increasing usage, and with the increasing pressures on our water resources. Pesticides may find their way into water supplies by various means, such as runoff of rain water from crop land or other pesticide-treated land, direct application to bodies of water, for …
Synthesis Of Hemimellitine, James Jacob Nigriny
Synthesis Of Hemimellitine, James Jacob Nigriny
Honors Theses
The purpose of this work is the synthesis of hemimellitine or 1, 2, 3 - trimethyl benzene. After library research (done mostly by John Peeling, Union '61) and with the assistance of Dr. Howard Sheffer, two pathways to hemimellitine were devised. Throughout the course of this project the lack of known compounds with which to compare intermediate products has presented difficulties in the identification of the intermediate products. However, the procedure followed here, i.e. using two different pathways to the same and product with some intermediates the same in both, has enabled us to compare the similar intermediates for identification …
Synthesis And Analyses Of Kau(Cn)4, Henry K. Lutz
Synthesis And Analyses Of Kau(Cn)4, Henry K. Lutz
Honors Theses
In recent years many investigators have sought to measure the rate of exchange between two different oxidation states of an element in aqueous solution. The results of such studies often lead to a clearer understanding of the intermediate steps of the chemical reactions of ions of elements. Sunce much of the chemistry of gold is insufficiently understoof, it seems desireable to look for a measurable rate of exchange between the various oxidation states of this element.
Preparation Of 1, 2, 3-Trimethylbenzene, John Horace Peeling
Preparation Of 1, 2, 3-Trimethylbenzene, John Horace Peeling
Honors Theses
The purpose of this project is the synthesis 1, 2, 3-trimethylbenzene or hemimellitene as an intermediate for further research. The synthesis was carried out using two different approaches.
Determination Of Pesticide Residues In Water, Jerry Lee Thurston
Determination Of Pesticide Residues In Water, Jerry Lee Thurston
Honors Theses
To find a rapid qualitative test to detect organic pesticides in water, the following method is proposed: 1. Extraction of the pesticide from water by use of an organic solvent 2. Use of gas chromatography with a collection to separate the pesticide from other substances soluble in the solvent 3. Use of an infrared spectrum for identification of the pesticide.
Phase Diagram Of The Solid-Liquid System 1-Methylnaphthalene--2-Methylnaphthalene, Michael Allan Schroeder
Phase Diagram Of The Solid-Liquid System 1-Methylnaphthalene--2-Methylnaphthalene, Michael Allan Schroeder
Honors Theses
The subject of this paper is the freezing point-composition diagram of the system 1-methylnapthalene--2-methylnaphthalene. The reason for writing this paper was that it was felt the resulting phase diagram might be of use in the separation of mixtures of the two components, since they frequently occur together in petrolem, and the preparation of 2-methylnapthalene by Friedel-Crafts alkylation also results in the formation of some l-methylnaphthalene. Also, it was felt that it would be of interest to determine the phase diagram for a system of two compounds as similar as these.
Polarographic Investigation Of An Unusual Contaminant In Trichlorobiphenyl, Henry Michael Stahr
Polarographic Investigation Of An Unusual Contaminant In Trichlorobiphenyl, Henry Michael Stahr
Honors Theses
An interest in polarography of organic compounds developed because of the need for an instrumental technique to determine unstable chlorine compounds in askarels used in the electrical industry for dielectric fluids. A chance contamination of trichlorobiphenyl used to impregnate capacitors caused the electrical industry untimely failures in their devices in 1956. These compounds break down under the influence of heat and electrical stress to form a buildup of conducting species which ultimately cause capacitors to fail. (1) Several test methods have been developed,( 2) all of which involve anionic hydrolysis of the unstable compounds and a potentiometric titration of the …