The Enhancement of Acidity of Very Weak Acids in Tertiary Butyl Alcohol (open access)

The Enhancement of Acidity of Very Weak Acids in Tertiary Butyl Alcohol

Technical report. From Abstract : "The acidity of a solution of acid, HX, and salt, MX, is affected by both the concentration of X- and M+ owing to incomplete dissociation of the salt, MX. it was possible to increase the acidity of a solution of 2,6-di-tert-butylphenol - tetrabutylammonium 2,6-di-tert-butylphenolate relative to a dilute solution of tetrabutylammonium hydroxide by increasing the tetrabutylammonium bromide content. This indicates that the dissociation constant of the hydroxide base is sufficiently large that extensive dissociation occurs in dilute solutions. The addition of tetrabutylammonium bromide is therefore recommended as a general method for increasing the acidity and improving the titration characteristics of extremely weak acids."
Date: October 22, 1962
Creator: Marple, Leland & Fritz, J. S.
System: The UNT Digital Library
Geohydrology of Tatum Salt Dome Area, Lamar and Marion Counties, Mississippi (open access)

Geohydrology of Tatum Salt Dome Area, Lamar and Marion Counties, Mississippi

Report of the Geohydrology of the tatun salt done area of Lamar and Marion counties.
Date: October 22, 1964
Creator: Taylor, R. E.
System: The UNT Digital Library
On Certain Phase Equilibria in the Ternary System Uranyl Nitrate--Ether--Water at 25° and at 1°C (open access)

On Certain Phase Equilibria in the Ternary System Uranyl Nitrate--Ether--Water at 25° and at 1°C

This report follows a study that deals with a portion of the ternary diagram previously analyzed, namely the boundary curves which separate the central area of two coexistent liquid phases from the two border stripe representing one-phase liquid systems.
Date: October 22, 1942
Creator: Van Name, Ralph Gibbs
System: The UNT Digital Library
The X-Ray Spectra of the Last-Row Elements (open access)

The X-Ray Spectra of the Last-Row Elements

Abstract: X-ray energy level diagrams as given in the literature are tabulated for radium, thorium and uranium. A level scheme for protoactinium is derived from the published data. After a brief review of the use of X-ray data in studying outer electronic structure, it is pointed out that differences in the X-ray spectra should exist depending on whether the outer electrons are in f or d orbitals. The observed separation of the OI and OII levels in thorium and uranium indicated that the f levels lie lower than the d. This hypothesis also provides a reasonable explanation for the observed differences between the MIV and MV absorption edges and MIV and MV levels calculated from the emission spectra and the LIII edge.
Date: October 22, 1946
Creator: Russell, H., Jr.
System: The UNT Digital Library