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The surface tension of mercury and the adsorption of some hydrocarbons on mercury.


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Roberts, Noel Keith 1960 , 'The surface tension of mercury and the adsorption of some hydrocarbons on mercury.', PhD thesis, University of Tasmania.

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The surface tension of mercury is within 0.2% of
485.4 dynes cm-1 at 25°C.
487.3 dynes em-1at 16.5°C.

These values are in agreement with the most reliable
work to date (Kemball (3) ). It is not necessary , as
all workers have insisted, to "clean" the glass vessel
in which the surface tension is measured.

The normal saturated aliphatic hydrocarbons give
almost the same lowering of the surface tension at the
same relative pressures of vapour, i.e. the decrease In
vapour pressure on ascending the hydrocarbon series is
approximately balanced by an increase in the intensity
of adsorption. The results are analysed on the basis
of two surface equations of state, the Volmer equation
(a two dimensional analogue of Van der Waalls equation
with the repulsive term predominating), and the Virial -
equation in two dimensions with the correction term
related to the forces between the molecules. From
these two viewpoints the hydrocarbon molecules appear
to be relatively curled up on the surface with their
electron envelopes highly distorted.

Item Type: Thesis - PhD
Authors/Creators:Roberts, Noel Keith
Keywords: Mercury, Adsorption
Copyright Holders: The Author
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Copyright 1960 the author - The University is continuing to endeavour to trace the copyright
owner(s) and in the meantime this item has been reproduced here in good faith. We
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Thesis (Ph.D.)--University of Tasmania, 1961

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