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"THOMSEN, JULIUS.
Thermochemiske Undersøgelser over Affinitetsforholdene imellem Syrer og Baser i vandig Opløsning. I-XII (in 7 Parts, all).
Kjøbenhavn, 1869-73. 4to. Bound i one cont. hcalf. Back a little rubbed. Around 300 pp. and 3 folded plates. Together with the authors: Bidrag til et thermochemisk System. Kbhvn., (1852). 4to. (48) pp. All issued in Videnskabernes Selskabs Skrifter.
Reference : 25824
First edition of Thomsens main contributions in thermochemistry, undoubtly the most importent contribution from a Dane in chemistry in the 19th century. - The paper from 1852 ""Contribution to a Thermochemical System"" is famous as it is the first statement of a new nomenclatura and the paper contains the first enunciation of the thermochemical affinity principle, which states that chemical affinity, or the attraction between substances, can be measured by the heat evolved when body combine. His fundamental thought was that the evolution of heat accompanying a chemical reaction (which he called varmetoning, equivalent to enthalpy change) is an exact expression of the chemical affinity of the reaction.
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1 book(s) with the same title
Thermochemiske Undersøgelser over Affinitetsforholdene imellem Syrer og Baser i vandig Opløsning. I-XII (in 7 parts, all)
Kjøbenhavn, Bianco Luno, 1869-73. 4to. Bound in one contemp. hcloth. Around 300 pp., plates. Some brownspots.
First edition of Thomsens main contributions in thermochemistry, undoubtly the most importent contribution from a Dane in chemistry in the 19th century. - The construction of a complete and quantitative system of thermochemistry required an extensive and accurate collection of thermochemical data over and above the observations upon which the principle was based. The amount of data which he amassed was so great that it enabled him the calculation of heats of reaction for practically speaking every fairly common inorganic reaction. The results, which are based between three and four thousand measurements, were later collected in his famous work ""Thermochemische Untersuchungen"" (The Danish original oferred here).
