Physical Sciences and Mathematics Commons^™

Conductivity Applications, Henry W. Koch

Bachelors’ Theses

Since the introduction of Arrhenius’ theory of electrolytic dissociation more than forty years ago, many applications of the chemistry of electrolytes have been formulated. Of the many uses of conductance measurements, conductivity titrations have lately assumed the theoretical and technical importance which they rightfully should have. Conductance measurements enjoy prominence both in practice and in research, and the almost unlimited field provides a wealth of material for the ardent electrochemist. There is no doubt that many of the old analytic methods will soon be largely supplanted by this newer procedure which even at the present finds such varied usefulness.

The Preparation Of Calcium And Barium Gluconate, Ronald Anthony Plzak

Bachelors’ Theses

The privilege of working on this subject is one which the author has sincerely appreciated, as it has given him the opportunity of incorporating many of the more recent contributions along the line of oxidizing aldose sugars. In reviewing these contributions, he has abstained from conveying an impression of finality and has attempted to show the many possibilities which the free sugar acids offer for the future. The experience of the last few years has proved that even long-cherished conceptions and apparently well-established facts may at any time undergo drastic revision. For this reason, the author has referred directly to …

An Investigation Of The Methods Used In The Preparation Of Acid Amides, Everett Stats

Bachelors’ Theses

Much work has been done on the preparation of acid amides, but there are few sources where one may find the methods tabulated. It has been the purpose of this Thesis, therefore, to try out various methods and conditions for the preparation of the aliphatic and aromatic amides and to record them.

A Comparison Of The Caffeine Content Of Various Coffees, Emil J. Petrusek

Bachelors’ Theses

Coffee must be rated as one of the most important commodities in the commercial world due to the statistics or output and consumption. There are various brands and kinds of coffee produced by the different growers and roasters. Now to sell the brands, the various concerns base their advertising upon the flavor and price of the coffee. It is a fact that the flavor of coffee is in some way affected by the caffeine present. One popular brand is advertised as decaffeinated, that is, the caffeine has been removed. Confronted with these facts, it occurred to the author to test …

The Extraction Of Tantalum And Columbium From Tantalite, Stanley P. Wisniewski

Bachelors’ Theses

In the summer of 1932, the Milwaukee Public Museum, sent an expedition to the Bad Lands and Black Hills of South Dakota, under the direction of Dr. Ira Edwards, Curator of Geology in that institution. It was at this time that the author, a member of this group, while studying the pegmatites of the Black Hills, became interested in the tantalum-columbium bearing minerals of that region, namely tantalite and columbite. At that time the writer made a detailed mineralogical study of these two minerals, as well as a thorough investigation of their occurrence in that region. In the fall of …

Sensitivity Of Curcumin As An Organic Reagent In Testing For Beryllium, James W. Bookhamer

Bachelors’ Theses

For many years the analytical chemist avoided by design or more probably by accident the general use of organic chemicals in his work. Some few of them he accepted as a matter of course, and perhaps without much thought of their organic nature. In qualitative analysis he used chloroform as a solvent in testing for bromine and iodine. A few indicators were in common use, but organic chemicals were used but little in analytical work. It was not until the twentieth century that their use in analytical procedures received any worthwhile attention. Since then they have rapidly come to the …

The Purification Of Coffee Wax By Means Of A Special Extractor Followed By A Dialysis Process, John Dobrojevic

Bachelors’ Theses

This work was performed with the intention of devising a method where-by true wax could be isolated from a conglomerated mixture called coffee wax.

The Grignard Reagents: Their Preparation, Flora Cooke

Chemistry Honors Papers

This 14 page thesis examines various methods for the preparation of the Grignard reagent.

Chemical And Physical Considerations Of Carbohydrates, Flora Cooke

Chemistry Honors Papers

This 13 page thesis examines chemical and physical considerations of carbohydrates.

Some Aldehyde Condensation Derivatives Of Creatinine, Clarence England Denoon Jr.

Master's Theses

When insulin, a substance which is used to reduce sugar in the blood is hydrolysed, products are obtained bearing some similarity to creatinine. Therefore, reasoning conversely, creatinine derivatives might be expected to posses as a hypo- glycemic (sugar reducing) effect.

Selenium In Proteins From Toxic Foodstuffs, Edgar Page Painter

Electronic Theses and Dissertations

The importance of the selenium problem has been established. Knight (1) in an address before The Association of Official Agricultural Chemists summarized the progress made on the problem, conservatively emphasized its importance, and stressed the need for extensive research. It is a paramount problem not only in South Dakota, but in many other states as well.

A Contribution To The Preparation Of Synthetic Rubber From Butyl Alcohol, Rosalia Aloisia Leutgoeb

Bachelors’ Theses

Rubber, on account of its almost universal usefulness is one of the important materials of modern time. The unequalled utility of it is found in its physical properties, such as elasticity and toughness, which are not possessed by other plastic substances.

Some Contributions To Iodometric Technique, Justin Kimber Dyche

University of the Pacific Theses and Dissertations

Analysis is a very important branch of chemistry, for it is such a practical part of the science. Analysis is itself divided into two parts. Qualitative analysis discovers what things are present in the material in question. Quantitative analysis then determines how much of each ingredient is present. This thesis considers a limited section of quantitative analysis.

This thesis deals with the use of iodine in volumetric analysis, which is called either iodimetry or iodometry. In this type of analysis, the iodine is used in solution and reacts with some other material, also in solution, and takes up electrons. That …

Effect Of Varying Supports On Nickel As A Catalyst In The Hydrogenation Of Unrefined And Refined Soy Bean Oil, Nate W. Fredman

Bachelors’ Theses

Hydrogenation is a subject that has grown in im­portance only within the last thirty years. Before 1900, little was known about the process of adding hydrogen to a liquid oil to form a solid fat, the latter of which has a great deal more uses than the former. Much trouble was experienced, since conditions controlling the process must be very definite in order to obtain good results.

Chemists have found that the main requisite in the above process is the catalyst. It must be very carefully pre­pared and controlled. But instead of using only the catalyst, many modern research workers …

The Effect Of Halowax 1012, 1013 & 1014 On The Melting Points Of Various Waxes, Louis Henry Kroening

Bachelors’ Theses

This thesis is concerned with the melting points of various waxes and the effect of Halowax 1012, 1013 and 1014 upon their physical constants. Interest in this problem was aroused "by the fact that Halowax as shown by Nathan Smith in his thesis, "The Effect of Halowax Upon Lubricating Oils and Greases”, decreases the viscosity of oils. Since lubricating oils contain waxes it is logical to expect that this decrease in viscosity is due to the lowering of the melting point of the waxes present. It was to investigate the truth of this assumption that this work was begun.

A Study Of Melting Points Of Various Ternary Mixtures Of Waxes, Leonard Anthony Veranth

Bachelors’ Theses

The work undertaken in this thesis is a continuation of the work done by George John Hable entitled, "A Study of Melting Points of Various Binary Mixtures of Waxes". In the present work, the melting points of ternary mixtures of waxes is studied. The experimental work is presented in the form of graphs so that the reader is afforded a better representation and clearer conception of the work done and the results obtained.

The Effect Of Ultra-Violet Light On Ethyl Acetate, Homer W. Wiesner

Bachelors’ Theses

The present work, is a study of the effect of ultraviolet light on pure organic compounds. In particular, it is a qualitative and quantitative study of_ the decomposition products of ethyl acetate as effected by ultraviolet radiations, together with the development of experimental apparatus. In as much as the work required special apparatus, much of the time was spent in the development and construction of such apparatus.

A Method Of Determining The Relative Thermal Conductivities Of Liquids, Lohr Arthur Burkardt

Bachelors’ Theses

This thesis concerns the development of apparatus suitable for the practical determination of the thermal conductivity of liquids. The data presented in the literature refers to the deter­mination of absolute conductivity values and-is very unsatisfactory from a practical point of view. The aim here has not been to furnish abso­lute data, but to provide a simple means of determining the relative conductivity of any series of liquids. Knowing such a set of rela­tive conductivities, absolute values can readily be calculated therefrom.

The aim has been to develop an apparatus that is simple enough to be constructed in the ordinary laboratory, …

The Melting Points Of Bismuth - Zinc - Tin Alloys By The Cooling Curve Method, Siegfried Kulbacki

Bachelors’ Theses

Undoubtedly, the properties of a metal which contribute to its general usefulness consist of hardness, tenacity, elasticity, malleability, ductility, density, fusibility, expansion by heat, resistance to corrosion and conductivity for heat and electricity.

A Contribution To The Preparation Of Synthetic Rubber From Butadiene. Ii., Joseph Patrick Iding

Bachelors’ Theses

Since the World War, the production of synthetic rubber has become the problem not only of the laboratory, but of commerce as well. Several factors demanded this research.

In the first place, the World War made the dependence of countries on each other strikingly evident in several ways, one of which was the need for rubber by great nations whose situations prohibited the planting of the rubber tree and consequently put them under obligation to other countries for their supply.

And now in the last few years this demand for rubber has been increased enormously, through the increased production of …

Potentiometric Titration, S. Lillian Kern

Chemistry Honors Papers

This 27 page thesis contains a general description of the theory and technique of potentiometric titrations.

Butyl And Ethanol Ethers Of The Ortho, Meta And Para Xenols., Mary Agatha O'Neill

Electronic Theses and Dissertations

No abstract provided.

Practical Vacuum Drying Theory., John W. Ridgway

Electronic Theses and Dissertations

No abstract provided.

The Action Of Tertiary Butyl Hypochlorite On Certain Nitrogen Compounds, Myrl Lichtenwalter

Electronic Theses & Dissertations

In an earlier unpublished study, made in this laboratory, of the preparation and properties of positive halogen compounds, it was found that the replacement of hydrogen on an imide nitrogen in certain compounds sensitive to hydrolytic agents could be accomplished in tertiary butyl alcohol solution. It seemed likely that this reaction took place through the intermediate formation of tertiary butyl hypochlorite. Such mechanism has been proposed by Sandmeyer to account for the formation of chlorylimino ethyl carbonate by the action of chlorine on an alcoholic solution of potassium cyanide. The isolation of tertiary butyl hypochlorite by Chattaway and Brackenburg makes …

A Study Of The Cooling Curve Of Several Waxes And Various Binary Mixtures Of These Waxes, Casimir A. Smyk

Bachelors’ Theses

A cooling curve may be defined as a graphic representation of the relationship which exists in the elapse of time and temperature of a substance surrounded by a medium of a temperature lower than itself. There is no heat added to the substance and the only heat taken away from the substance is by means of the surrounding medium. It is time plotted against temperature. Time on the x-axis and temperature on the y-axis. Many methods have been mentioned for the determination of purity and identification of a wax. But the methods are not standardized because of the length and …

The Effect Of Halowax On Lubricating Oil And Grease: The Instability Of Aluminum Grease In Regard To Viscosity, Nathan Smith

Bachelors’ Theses

This thesis is concerned with lubricating oils and solid lubricants. The initial problem in this research was the effect of Halowax 1012, 1013, and 1014 on lubricating oil. During the investigation, however, it was observed that the addition of Halowax to the lubricating oils formed a false gel at ordinary temperature, the consistency depending on the percentage of Halowax added. The result no longer favored continued research since the lubricating oil was made impractical. The problem then lent itself to the influence of Halowax on solid lubricants, in particular lubricating greases. It was on this phase of the investigation that …

Determination Of The Limits And Accuracy Of Potassium Ferricyanide As An Outside Indicator In The Determination Of Iron And A Comparison Of This Outside Indicator With Diphenylamine As An Inside Indicator, Eugene D. Burr

Electronic Theses and Dissertations

In the volumetric course as offered by the Department of Chemistry of South Dakota State College for the spring term of 1931, we experienced difficulties in the methods which we were using for the determination of iron. The general method used was that of Penny's, using an outside indicator of potassium ferricyanide, and titrating with potassium dichromate.

Wax Analysis With Special Reference To Montan, Spermaceti, And Chinese Insect Wax, Margaret M. Plonsker, Margaret E. Seippel

Bachelors’ Theses

The presentation of this thesis under joint authorship finds its justification in the fact that much of the experimental work, though performed individually, is of such a nature as to warrant a unified description. In this way the reader is afforded a better representation and clearer conception of the problem, and a substantial guide for further investigation. Though much work has been done in the field of wax analysis, little is known of the higher fatty acids and alcohols of many of the waxes. Their isolation has been infrequent, and few if any of their derivatives have been formed. It …

The Oxidation Of Amino Alcohols., Loran S. O'Bannon 1910-1995

Electronic Theses and Dissertations

No abstract provided.

The Preparation And Specific Gravity Of Pure Formic Acid And Its Aqueous Solutions, Leo Henry Merchie

Masters Theses

"Formic acid, the lowest member of the fatty acid series, was obtained as early as the seventeenth century by distilling ants with water. Other methods were later found after the correct constitution of the acid became known. This acid is not difficult to prepare in a water solution, but it is difficult to obtain in the anhydrous state...The purpose of this work is to study the various methods of preparing anhydrous formic acid, to improve a method for preparing the anhydrous acid, and to correct specific gravity tables for aqueous solutions of formic acid"--Introduction, page 1-2.