Physical Sciences and Mathematics Commons^™

Current Efficiency Of The Commercial Chromium Plating Bath, John Kaczmarowski

Bachelors’ Theses

The subject matter of this thesis deals with the character of the chromium plate, the amount of hydrogen liberated at the cathode, the weight of the chromium deposited, and the cathode efficiency.

This investigation was made for the purpose of aiding .further research work to increase the cathode efficiency of the chromium plating bath. If greater efficiency can be obtained, then, chromium, as nickel, can be plated on small articles in rotating barrels.

The Spray Test In Chromium-Plated Brass, Paul Siegel

Bachelors’ Theses

For a great many years, the science of chromium plating has been investigated by eminent research workers in the domain of chemistry. The problem of deposition was solved some years ago by Carveth and Curry of Cornell University. At the present time there has accumulated such a vast mass of data upon the subject that it does not lie in the power of a single individual to obtain a truly thorough and comprehensive study of the entire problem in all of its aspects.

Substitution Of Hydrofluoric Acid For Sulphuric Acid In Chromium Plating, Leonard Schulze

Bachelors’ Theses

Chromium plating or the electrodeposition of chromium from chromic acid baths has been an accomplished fact for almost a century. However, it has not been until the last few years that considerable attributive information has been published to make the mechanism of the process sufficiently understood to permit its commercial operation.¹ Most of the scientific information published on chromium plating thus far is general there being very little specific information revealed as yet. Material, as shall be referred to occasionally, may be read about its early successful applications stressing the unusual properties, advantages, interests, and activities but very little …

The Solubility Of Certain Salts In Ethyl Iodide And The Miscibility Of Organic Liquids In Ethylene Bromide And Ethyl Bromide, Theodore F.X. Tribovii

Bachelors’ Theses

The problem is solely one of scientific interest. Ethyl iodide is commonly Known as an organic compound which is a very poor solvent, For this reason salts were chosen, which resembled atomically ethyl iodide. That is salts containing iodine. It would be commonly suspected that salts of this nature would, if any, be soluble in ethyl iodide.

A Volumetric Method Of Chromium Determination With Mercurous Nitrate, Gerald W. Lawton

Bachelors’ Theses

Boncyk in his research on potentiometric titrations, made the observation that apparently mercurous nitrate could be used to titrate chromic acid solution. He used potassium iodide as an outside indicator and found that a slight excess of mercurous nitrate gave a gray precipitate with potassium iodide solution. The precipitate seemed to indicate the end point, or the neutralization of the chromic acid; a slight excess of the mercurous nitrate causing the immediate formation of a gray precipitate. Not knowing the exact normality and purity of the solutions used, he could not ascertain whether the gray was the true end point, …

A Study Of The Plating Prohibitive Properties Of Various Separators, Bruno J. Pozorski

Bachelors’ Theses

The problem of this thesis is to study the plating prohibitive properties of the various materials commonly used in the manufacturing of separators, and to indicate which material would be most serviceable and feasible in a separator. At one time positives and negatives were kept not more than 0.25 inches apart, with the idea of reducing the intervening layers of electrolyte, and, therefore, the internal resistance of the cell, as much as possible. It was, however, found that the output could actually be increased by putting the plates at greater distances, the fact being that the larger bulk of solution …

Studies Of Respiration And Carbohydrate Changes In The Potato At 3 Degrees C And 20 Degrees C, Hermann I. Karl

Bachelors’ Theses

The purpose of this paper was to determine the effect which different factors would have on the respiration and the sugar content of potatoes. It is known that the sugar content of a potato may be increased with the lowering of the temperature. It is also known that with this lowering of temperature the respiration is also lowered. What other factors will effect the respiration and the sugar content of the potato and to what extent is the question to be answered.

Although this problem may seem of little importance because sugar .1e not wanted in a potato, yet the …

Hardness And Porosity In Chromium Plating, Waldemar Wick

Bachelors’ Theses

In recent years chromium plating has been subjected to much research due to its ever-increasing demand. The results of these investigations have demonstrated the valuable properties of this plate. Of its many advantageous properties, hardness is one of the outstanding ones, but its application in industry is as yet not fully realized. This being due to the fact that it is difficult to produce a plate that is uniform and does not chip. Many chemists have investigated the porosity of the chromium plate in order to produce a coating that could be used for protective purposes, but there seems to …

Studies In The Diphenyl Series : The Motility Of The Chlorine Atoms On The Nuclei., Adolph Rebernak 1907-1990

Electronic Theses and Dissertations

No abstract provided.

Studies In The Diphenyl Series : Monohydroxy Diphenyls., Elizabeth Kendrick Trawick 1908-1991

Electronic Theses and Dissertations

No abstract provided.

The Electro-Deposition Of The Binary System Copper-Cadmium., Allen Stratton Smith 1906-1966

Electronic Theses and Dissertations

No abstract provided.

Reactions Between The Stannous And Arsenate Ions In Silicic Acid Gels, Willard Merle Farr

University of the Pacific Theses and Dissertations

Observation of crystal growths resulting from the chemical interaction of stannous chloride and sodium arsenate in silicic acid gels revealed the following very interesting fact. Gels identical in every respect except acidity, contained crystal growths varying greatly in appearance.

The purpose of this investigation was, therefore, to allow stannous and arsenate ion to combine in a series of accurately prepared gels, identical in all respects except the acid content, and to observe the effect upon crystal growth of: (1) varying the acid concentration; and (2) varying the kind of acid

A Preliminary Study Of Electrical Conductivity In Silicic Acid Gels, Rudolph C. Ferguson

University of the Pacific Theses and Dissertations

In this project the author has attempted to determine the specific conductance of a gel of known composition; the changes, if any, of conductance in a gel as it sets; and the changes in conductance due to the diffusing of an electrolyte through the gel.

A Study Of The Miscibility Of Various Liquids With Ethylene Glycol, Joseph J. Furlong

Bachelors’ Theses

Ethylene glycol is a compound possessing great interest, both from a theoretical and a practical standpoint. In its properties it lies midway between ethyl alcohol, C₂H₅0H, and glycerol, C₃H₅(0H)₃, the three compounds together forming an homologous series of alcohols.

A few years ago this substance was a scientific curiosity, produced solely by laboratory methods, and without any commercial value, although it had been known for more than sixty years. Today the manufacturers cannot produce enough glycol to satisfy the growing demand. The DuPont organization wanted to use it in a …

A Study Of Halowas Oil In Reference To Its Properties And Uses, Joseph F. Hoffman

Bachelors’ Theses

Halowax oil, specific gravity 1.25, is a thinly fluid mobile liquid, almost colorless, having a characteristic odor which is not unpleasant, heavy, or persistent. It is manufactured by the Halowax Corporation, a division or the Bakelite Corporation, at Wyandotte, Michigan.

The Development Of Colloid Chemistry, Oscar A. Bouise

Electronic Theses and Dissertations

At first, it was a blur, that had shrouded a great mystery for ages and ages, until some seventy odd years ago. Then came Thomas Graham, who could not satisfy himself with merely viewing a blur as a blur. Being a scientist, he applied his mind experimentally, with the keen precision of any of the eminent astronomers using a telescope, and viewed more clearly this mist which hovered above the horizon . But maybe it was not due time fir the unfolding of the great secret, for Graham's focus only revealed a more complicated mist that had been seen before. …

The Development Of Colloid Chemistry, Oscar A. Bouise

Electronic Theses and Dissertations

At first, it was as a blur, that had shrouded a great mystery for ages and ages, until some seventy odd years ago. Then came Thomas Graham, who could not satisfy himself with merely viewing a blur as a blur. Being a scientist, he applied his mind experimentally, which the keen precision of any of the eminent astronomers using a telescope, and viewed more clearly this mist which hovered above the horizon.

The Determination Of Hydrogen Ion Concentration By The Electrometric Method, Evelyn Matthews Cook

Chemistry Honors Papers

This 12 page thesis examines the measurement of ion concentrations in solution using electrometric titration.

The Corrosion Prevention Qualities Of The Aldehydes, Oliver R. Mackenzie

Bachelors’ Theses

In preparing the natural ore of iron for commercial use, man has met with great success. At present, approximately 36,000,000 tons of steel are produced yearly in the United States alone. Man, however, has been confronted by an unceasing, tireless agent which tends to return the newly manufactured steel to the oxide of the iron, a condition similar to that of the natural ore. To prevent this action, man has put up a continual fight, using many preventitlves, but to date corrosion has overcome all of man’s contrivances and emerged the winner.

On The Disposal Of Acid Sludge- A Waste Product Obtained In The Process Of Benzol Rectification, Maurice D. Gracey

Bachelors’ Theses

A certain stage of benzol rectification yields a waste product termed acid sludge, which forms a problem of disposal because of certain physical and chemical properties.

The Throwing Power In Chromium Plating, Samuel F. Gerstein

Bachelors’ Theses

In chromium plating, it is very difficult to get a continuous deposit of chromium of uniform properties upon irregularly shaped articles and especially upon those having deep recesses. the nature, cause, and methods on improvement of this poor throwing power will be treated.

A Study Of Gel Formation In Kerosene In Contact With Sodium, Jerome M. Weller

Bachelors’ Theses

The origin of the problem to be considered in this paper is traced to the observations of John R. Koob, Ph.D., Head of the Chemistry Department of Marquette University. It was his experience to note that the kerosene, in a bottle, containing cut sodium for the organic laboratory, had solidified to a gel, resembling Vaseline in appearance.

The Study Of The Effects Of Different Metallic Soaps On The Water Content Of Water-In-Gasoline Emulsions, Lynn D. Wilson

Bachelors’ Theses

The study of emulsions and emulsification is of very great theoretical and practical interest. From the standpoint of pure science it throws much light on the problems of surface tension, surface concentration, absorption, surface films, electrical double layers. Brownian movement, and the general theory of disperse systems and colloids. It is also of importance in biological science, e.g., the adsorption of fats and the permeability of membranes. When industrial and applied science are considered, it is remarkable how many subjects of interest and importance are dependent on a knowledge of the formation, behavior, and stability of emulsions. In this connection, …

The Influence Of Freezing On The Occurrence Of Reducing Sugar In The Potato, Leo B. Perssion

Bachelors’ Theses

The purpose or this thesis was to see if the change or potato starch to a reducing sugar in the potato on freezing was due to the freezing itself or to some enzymatic reaction. For we know that reducing sugars are formed in the potato by just freezing, therefore it should be possible to manufacture sugar by using pure potato starch as a base. Although this problem may seem to be an unimportant labor as the supply of sugar is large and the price of sugar cheap; this process of obtaining sugar would save thousands or bushels of potatoes every …

A Comparative Study Of The Chemical Composition Of Artificially Dried Hay To Obtain An Insight As To Its Nutritive Value, Charles F. Schalbe

Bachelors’ Theses

This work has been undertaken as a ·result of tests recently carried out at the Greene Brothers' Brook Hill Farm at Genesee Depot, Wisconsin. It was found that cows, when fed artificially dried hay, produce milk in quantities greatly in excess of that accountable from known differences in the hay. Moreover, the milk seemed to have a different flavor - similar to pasture produced milk.

The Effect Of Current Density On The Efficiency Of A Brass Cathode In Chromium Plating, Anton E. Budner

Bachelors’ Theses

That chromium could be electrodeposited from chromic acid baths, has been an accomplished fact for over 70 years. However, only in the past few years, has the mechanism of the process been sufficiently understood to permit chromium plating on a commercial basis. Because of the properties and advantages of this particular deposit, tremendous interest and activity has developed in this practically new field. Numerous patents have been granted, but relatively little specific scientific information has been published. Much work can yet be done towards the development of this field. It is the problem of this thesis to study the effect …

An Analysis Of Pecan Nut Shells, Marie I. Bond

Bachelors’ Theses

This thesis deals with the methods or analysis or pecan nut shells and an attempt to identify the extracted pigment.

At present nut shells are waste products. This makes their study interesting from a commercial standpoint. In view of the fact that very little work of this kind has been done, nut shell analysis offers interesting research problems as well as excellent practice in the technique or organic analysis.

Such great interest is now being taken in plant pigments that, a thorough investigation of the red pigment yielded by pecan nut shell would be an appreciated contribution to science.

A Study Of Various Metallic Electrodes In Potentiometric Titrations, Louie Boncyk

Bachelors’ Theses

The significance of ion concentrations has been the subject of many investigations during the last few years. The results obtained have demonstrated without question the unlimited possibilities existing for laboratory and industrial applications of ion concentration measurements. It has been shown in many instances biological activity, fermentation, and filtration are influenced to a large extent by variations in the H-ion concentration. In addition, the way is open for improved control and accuracy in the many neutralization problems encountered in the laboratory. The lack of suitable electrodes has greatly retarded the practical applications of H-ion measurements to plant industrial problems. The …

The Distillation Curves Of Several Liquid Binary Stystems Of Various Aliphatic Alcohols With Benzene And Toluene, Jack Philip Eigen

Bachelors’ Theses

The object of this thesis is to determine the distillation curves of several liquid binary systems and to locate any constant boiling mixture by means of graphical representation.

Such an investigation has a commercial aspect. A research of this kind is valuable to the paint industry, and also for any industry interested in preparing very pure liquids by distillation. The following investigation limits itself to a study of. boiling point curves of mixtures of various aliphatic alcohols with benzene or toluene. These systems are reputed to have a minimum boiling which would be very valuable in the paint industry as …

Experiments On The Effect Of Current Density Of The Porosity Of Chromium Plated Steel, William G. Hilger

Bachelors’ Theses

The application of chromium plating in industry has grown out of a series of experiments conducted in the past few years. However as early as 1854, research was carried on in this field, but it was only in the years 1920 - 1925, that the chromium plating industry became an actual fact. From then on it has progressed very rapidly. In the present day chromium is applied for two main purposes: (a) to produce a permanent and decorative effect and, (b) to prolong the life of mechanical parts subjected to unusual conditions of wear or temperature. The electrodeposition of chromium …