Masters Theses

Abstract

"Knudsen effusion experiments were carried out on CdO in fused silica crucibles at temperatures of 918°K, 1008°K with orifice areas from 2.742x10-3 cm2 to 30.52x10-2 cm2. The experiments were made in a molybdenum-wire, resistance-heated vacuum furnace. Several orifice areas were used at each temperature and reciprocal pressure versus orifice area plots were made. These plots yielded an upper limit to the evaporation coefficient of. 4.15x10-2. An equilibrium constant for the vaporization reaction

CdO(s) = Cd(g) + 1/202 (g)

of

log Keq = 11.12 - 1.952x104/T.

was obtained. Second and third law values of ΔH°298 were 91.1±1.1 kcal/mole and 88.7±0.9 kcal/mole respectively. A ΔS°298 of 54.1±3.8 was determined by the second law method. The vapor pressure of silver was measured at 1210°K to check experimental techniques. Agreement with an accepted value was within 6.5 per cent"--Abstract, page ii.

Advisor(s)

Lewis, Gordon

Committee Member(s)

James, William Joseph
O'Keefe, T. J. (Thomas J.)
Moore, Robert E., 1930-2003

Department(s)

Materials Science and Engineering

Degree Name

M.S. in Ceramic Engineering

Sponsor(s)

University of Missouri. Space Sciences Research Center

Publisher

University of Missouri at Rolla

Publication Date

1967

Pagination

vii, 65 pages

Note about bibliography

Includes bibliographical references (pages 47-48).

Rights

© 1967 R. Tom Coyle, Jr., All rights reserved.

Document Type

Thesis - Open Access

File Type

text

Language

English

Library of Congress Subject Headings

Cadmium compounds -- Effect of high temperatures on
Vapor pressure -- Mathematics
Thermodynamics -- Measurement

Thesis Number

T 1980

Print OCLC #

5981201

Electronic OCLC #

907295494

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