A System of Physical Chemistry

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Longmans, Green, 1921 - Chemistry, Physical and theoretical
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Page 68 - The overhanging part of the curve from e toy seems to represent a state in which there would be some kind of unstable equilibrium ; and so, although the curve there appears to have some important theoretical significance, yet the states represented by its various points would be unattainable throughout any ordinary mass of the fluid. It seems to represent conditions of coexistent temperature, pressure, and volume in which, if all parts of a mass of fluid were placed, it would be in equilibrium, but...
Page 376 - the quantity of salt, which diffuses through a given area, is proportional to the difference between the concentrations of two areas infinitely near each other.
Page 348 - NH though even here the lithium stands higher in the series than it has been found with other substances. While there is unquestionably a tendency for ions of a higher valence to be adsorbed more strongly than ions of a lower valence, the experiments which have been cited show that there are many exceptions, and that the fundamental rule is that the adsorption is specific both as regards the adsorbing substance and the ion adsorbed.
Page 37 - The drops which it was found possible to balance by an electrical field always carried multiple charges, and the difficulty experienced in balancing such drops was less than had been anticipated. The procedure is simply to form a cloud and throw on the field immediately thereafter. The drops which have charges of the same sign as that of the upper plate or too weak charges of the opposite sign, rapidly fall, while those which are charged with too many multiples of sign opposite to that of the upper...
Page vii - System' consists in regarding all physico-chemical phenomena as being capable of separation into two classes: first, phenomena exhibited by material systems when in a state of equilibrium; and, secondly, phenomena exhibited by material systems which have not reached a state of equilibrium. It is clear that this is not only a perfectly natural division but likewise a perfectly general one, since any conceivable material system must belong to one class or the other. By emphasizing this idea I hope...
Page 66 - Now it will be my chief object in the present paper to state and support a view which has occurred to me, according to which it appears probable that, although there be a practical breach of continuity in crossing the line of boiling-points from liquid to gas or from gas to liquid, there may exist, in the nature of things, a theoretical continuity across this breach having some real and true significance. This theoretical continuity, from the ordinary liquid state to the ordinary gaseous state, must...
Page 166 - A (fig. 1), completely full of an aqueous solution of sugar, placed in water, B. If it be conceived that the solid walls of this vessel are permeable to water, but impermeable to the dissolved sugar, then, owing to the attraction of the solution for water, water will enter the vessel A up to a certain limit, thereby increasing the pressure on the walls of the vessel. Equilibrium then ensues, owing to the pressure resisting further entry of water. This pressure we have termed osmotic pressure.
Page iv - ... achievements contribute in no small degree to future progress. But though good work has been done, much yet remains to do. If, as is sometimes supposed, science consisted in nothing but the laborious accumulation of facts, it would soon come to a standstill, crushed, as it were, under its own weight. The suggestion of a new idea or the detection of a law, supersedes much that had previously been a burden upon the memory, and, by introducing order and coherence, facilitates the retention of the...
Page 475 - ... not a property of the group molecules, but depends only on the least active portions of the molecules and on the manner in which these are able to arrange themselves in the surface layer.

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