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The Influence of Water in Physical Change


PROF. H. E. ARMSTRONG has long insisted on the view that chemical action a species of reversed electrolysis and that an ectrolyte, generally water in terrestrial systams, is a sine qua non for chemical action. Whether we should regard modifications in the ‘molecular’ weights of a liquid, alteration in the ‘constants’ of the Van der Waal's equation of state for a vapour or gas, change in the surface tension or vapour pressure of a liquid, all due to association or dissociation, as caused by the operation of physical or chemical change, might be debated by the purist.

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