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Missouri University of Science and Technology

Theses/Dissertations

1967

<p>Cadmium compounds -- Effect of high temperatures on<br />Vapor pressure -- Mathematics<br />Thermodynamics -- Measurement</p>

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Vapor Pressure And Evaporation Coefficient Of Cadmium Oxide, R. Tom Coyle Jr. Jan 1967

Vapor Pressure And Evaporation Coefficient Of Cadmium Oxide, R. Tom Coyle Jr.

Masters Theses

"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 …