Sinopsis
The Affinity Of Certain Compounds
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Reseña del editor
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Reseña del editor
The investigations narrated in the following paper were undertaken at the suggestion of Professor J. W. Langley, and throughout the work I have enjoyed the benefit of his counsel. The relation of electrical to chemical forces has been a favorite subject of study with chemists and physicists for a long time, even with those who did not believe in the identity of nature in these two forms of energy. As late as A pril 5, 1881, Prof. Helmholtz in his Faraday Lecture advocates the doctrine that these forces are fundamentally identical. After discussing Faraday slaw of definite electrolytic action and its results, he says: Faraday very often recurs to this to express his conviction that the forces termed chemical affinity and electricity are one and the same. .. I think these facts leave no doubt that the very mightiest among chemical forces are of electrical origin. It will be seen even in the following pages that chemical forces may be measured and expressed in terms of electrical measurement, without any computations or conversions whatever. This fact certainly does not prove the identity of the two forces, but it is an interesting fact and one not to be overlooked in making up ones mind on the subject. This attempt to get some numerical data as to the relative strength of attractions in chemical affinities is not a late effort only with workers in physical science. Tidy2 enumerates six methods that have been employed by different investigators, and which I transcribe, giving the name of one or more of the principal experimenters by each method. I. Affinity measured by reference to the specific gravity of bodies. (L a Place and others.) II. Affinity measured by the force of adhesion. (G uyton Morreau.) III. Affinity measured by the amount of force required to effect the decomposition of a compound. The decomposition was effected in this case, first by heat; sec
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