Determination of vapour-pressure by air-bubbling

It was shown recently by one of us that the vapour-pressure of water can be determined with a considerable degree of accuracy by bubbling a current of air through water in a thermostat, and estimating the amount of water evaporated by absorbing it in strong sulphuric acid. The accuracy of the method...

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Bibliographic Details
Published in:Proceedings of the Royal Society of London. Series A, Containing papers of a mathematical and physical character Containing papers of a mathematical and physical character, 1905-05, Vol.76 (508), p.174-176
Main Authors: Perman, Edgar Philip, Davies, John Hughes
Format: Article
Language:English
Subjects:
Electrification
Flasks
Online Access:Get full text
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Summary:It was shown recently by one of us that the vapour-pressure of water can be determined with a considerable degree of accuracy by bubbling a current of air through water in a thermostat, and estimating the amount of water evaporated by absorbing it in strong sulphuric acid. The accuracy of the method has since been questioned, supersaturation being specially suggested as likely to cause error. We have therefore made experiments in order to discover what error (if any) is introduced by super­ saturating the air with moisture before it enters the water in the thermostat. The effect of dust in the air and of electrification have also been investigated. In each case the arrangement of the apparatus was as described in the previous paper.
ISSN:0950-1207
2053-9150
DOI:10.1098/rspa.1905.0017