Physical Sciences and Mathematics Commons^™

The Reaction Of Ethylenediamine With Cobalt (Ii) Perchlorate And Oxygen In Dilute Aqueous Solutions, Robert J. Karmy

All Master's Theses

Cobalt (II) perchlorate was reacted with ethylenediamine and molecular oxygen. Various mole ratios of ethylenediamine to cobalt (II) were oxygenated and studied by photometric, potentiometric, conductometric, magnetic susceptibility, freezing point depression, electron spin resonance and cobalt (II) extraction methods. The fact that the complex was brown in color, diamagnetic, contained ethylenediamine to cobalt to oxygen in a mole ratio of 4:2:1 was confirmed. The complex underwent elation to form a polymeric species with excess base. The complex could not be oxidized to a green paramagnetic complex by reacting it with sodium peroxydisulfate, potassium bromate, bromine or chlorine. Ammonia was added …

Preparation Of Phenylsulphur Chloride Tetrafluoride, Dennis T. Sauer

All Master's Theses

The reaction of C6H5SF3, CSF and C12 was studied under a variety of conditions. The reaction run in the presence of a trace of water yielded C6H5SO2F and C1C6H4SO2F. The reaction run in stainless steel at 170°C yielded an amber solid believed to be a polymer with the empirical formula C6H3.67SF2. Chlorination of a C6H5SF3-CSF mixture in monel at 220°C yielded a yellow liquid tentatively identified as a mixture of the new species C6H5SF4C1, FC6H4SF4C1 and C1C6H4SF4C1.

A Polarographic Study Of Substituent Effects In Nickel(Ii)-Complex Ions Of Pyridine And Pyridine Derivatives, Keith Edward Fester

University of the Pacific Theses and Dissertations

The electrochemical technique of polarography was used to study the complexions formed by Ni(II) ion and pyridine compounds. It was of interest to vary the substituent group on the pyridine ring in order to observe the effects on the nickel - nitrogen coordinate bonds.

Electrocapillary Studies Of Reversible Charge Transfer V(Iii)/V(Ii) Electrode, Mohammad Ali Akhtar

University of the Pacific Theses and Dissertations

Electrocapillary equation for an ideal polarized electrode based on Gibb's adsorption equation is appropriately recast into experimentally measurable quantities in order to apply it to a reversible charge transfer electrode.

To calculate the various parameters of the equation developed, experimental details were worked out. For the measurement of Current-time relationship of a single drop, a fast response potentiostat was built by using transistorized chopped stabilized operational amplifiers and precision components in the circuitry with proper compensation for IR-drop in the cell and the electrical double layer capacity. The analysis of I-t curves was done by taking into account the composite …

Measurement Of Fluorescence Lifetimes Of Biologically Significant Compounds, Irene Adele Petz

University of the Pacific Theses and Dissertations

The purpose of this research was to measure fluorescence decay-times of several biologically significant compounds. Although various equations are available which permit one to calculate fluorescence lifetimes from spectral data, ample evidence exists which indicates such calculations are at considerable variance with experimental results.

Determination Of Flow Curves From Capillary Rise Rate Measurements, Richard Lehr Kissling

University of the Pacific Theses and Dissertations

The measurement of viscosity is a common and useful technique for investigating the mechanical behavior of many real fluids. Theoretical interpretations of viscosity measurements have been important in attempts to elucidate fundamental properties of the liquid state. Brush (6) and Bondi (3) give reviews of the current status of attempts to construct theories of liquid viscosity, and it is quite apparent from these reviews that the molecular theory of rheological phenomena is in its infancy.

In addition to the fundamental aspects of viscometry, there are many practical applications to which viscosity measurements are directed (25). One has only to scan …