Physical Sciences and Mathematics Commons^™

The Chronopotentiometry Of Bismuth, Cynthia Elaine Wilson

Honors Theses

Whenever a constant current electrolysis is performed without stirring, the potentials of the electrodes change with time because the concentrations change at the surfaces of the electrodes. The principle of chronopotentiometry is based upon the idea that since the current is kept constant, the electrolysis proceeds at a constant rate. When the electrolysis circuit is closed, the concentrations of the substances taking part in the electrochemical reaction at the surface of the electrode start to vary. The electrode takes up the equilibrium potential as given by the Nernst equation provided the reaction is reversible. If the transport of the substances …

The Effect Of Oak Leaves On The Leaching Of Trace Metals From Sand, Thomas Elton Goodwin

Honors Theses

Sand is fairly rich in some common trace metals, notably manganese and iron. However, these metals for the most part are in a state which renders them insoluble in water. It is thought that the presence of organic matter (principally leaves) in the water enhances the dissolution of some of these trace metals into the aqueous solution.

This enhancement of dissolution is generally thought to come about in three main ways: (1) The organic matter present lowers the oxygen content of the water, and the metals are reduced into a soluble form, (2) The organic material, some of which is …

Acid-Base Titrations In Non-Aqueous Solvents, Gary Rice

Honors Theses

The acid-base titration is one of the simper methods available to the analytical chemist. Many organic compounds exhibit acidic or basic properties. Proper selection of solvent makes possible analytical determination of extremely weak acids and bases. This paper discusses the three solvent properties that are important in determining the acid-base behavior of a solute.

A Study Of The Curriculum Of The Natural Science Division Of Ouachita Baptist University, Natural Sciences Group

Honors Theses

In our evaluation of the curriculum of the Natural Science Division, we began by reviewing the catalogue descriptions of our courses and evaluating whether the courses meet the objectives given. To do this we divided into departments since our division is so large. Next, we wrote to Hendrix, Little Rook University, Southwestern at Memphis, and State College of Arkansas and compared their course offerings with ours. In this comparison we discovered our strengths and weaknesses and changes that need to be made in our present curriculum. In several cases we decided upon possible alterations which would aid the student going …

Studies On The Manganese Cycle, Jim Gilbert

Honors Theses

The first studies on the manganese cycle in impoundments were concerned with the manganese concentrations in and removal from bottom waters of deep impoundments. But as work progressed, the emphasis was more on the investigation of the mechanism by which manganese is dissolved in impounded waters.

The Structure And Use Of Dimethyl Sulfoxide, Nancy Goodson

Honors Theses

It is hard to talk about dimethyl sulfoxide (DMSO) without sounding like an old-time carnival snake-oil salesman. DMSO appears to be good for arthritis, sinusitis, headaches, earaches, sprains, and burns. It reduces swellings, suppresses blisters, kills pain, tranquilizes, and fights germs. It enhances the action of other drugs. It can be swallowed, injected, rubbed on, or dripped in.

Dimethyl sulfoxide is one hundred years old. It was first synthesized by Alexander Saytzeff in Germany in 1866. However, it remained a laboratory curiosity for about three-quarters of a century. No use was found for it until about ten years ago, when …