J. H. van 't Hoff: Wikis

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Jacobus Henricus van 't Hoff

Jacobus Henricus van 't Hoff
Born 30 August 1852
Rotterdam, Netherlands
Died 1 March 1911 (aged 58)
Steglitz, Berlin, Germany
Residence Netherlands
German Empire,
Nationality Netherlands
Fields Physical chemistry
Organic chemistry
Institutions Veterinary College in Utrecht
University of Amsterdam
University of Berlin
Alma mater Delft Polytechnic Institute
University of Leiden
University of Bonn
University of Paris
University of Utrecht
Doctoral advisor Eduard Mulder
Known for Chemical kinetics, Stereochemistry
Notable awards Nobel Prize for Chemistry (1901)

Jacobus Henricus van 't Hoff (30 August 1852 – 1 March 1911) was a Dutch physical and organic chemist and the winner of the inaugural Nobel Prize in chemistry. His research on chemical kinetics, chemical equilibrium, osmotic pressure and stereochemistry are among his most notable achievements. Through these achievements, Van 't Hoff helped found the discipline of physical chemistry as it is known today.

Contents

Biography

Van 't Hoff was born in Rotterdam, Netherlands, the son of a physician.[1]. From a young age he was interested in science and nature; he frequently took part in botanical excursions, and his receptiveness for philosophy and his predilection for poetry were already apparent in his early school years. (Lord Byron was his idol.) Against the wishes of his father, he went to study chemistry, first at the Delft Polytechnic Institute, then at the University of Leiden, then to Bonn, Germany (where he studied with Friedrich Kekulé), then Paris (where he studied with C. A. Wurtz), finally receiving his doctorate under Eduard Mulder at the University of Utrecht in 1874[2]. In 1878 van 't Hoff married Johanna Francina Mees. They had two daughters, Johanna Francina (b. 1880) and Aleida Jacoba (b. 1882), and two sons, Jacobus Hendricus (b. 1883) and Govert Jacob (b. 1889).

Career

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Contributions to chemistry

Before receiving his doctorate, van 't Hoff had already published the first of his important contributions to organic chemistry. In 1874 he accounted for the phenomenon of optical activity by assuming that the chemical bonds between carbon atoms and their neighbors were directed towards the corners of a regular tetrahedron. This three-dimensional structure perfectly accounted for the isomers found in nature (stereochemistry). He shares credit for this idea with the French chemist Joseph Le Bel, who independently came up with the same idea.

Van 't Hoff published his work on the geometry of science in his book La chimie dans l'éspace in 1874. At the time, his theory was considered an extraordinary claim in science, and was criticized strongly by the scientific community. One such critic was the renowned editor of the German Journal für praktische Chemie, Adolph Kolbe, who stated:

"A Dr. H. van ’t Hoff of the Veterinary School at Utrecht has no liking, apparently, for exact chemical investigation. He has considered it more comfortable to mount Pegasus (apparently borrowed from the Veterinary School) and to proclaim in his ‘La chimie dans l’espace’ how the atoms appear to him to be arranged in space, when he is on the chemical Mt. Parnassus which he has reached by bold flight."

However, van 't Hoff's work was revolutionary, and became indispensable in science.

Van 't Hoff in the 1900s.

In 1884 van 't Hoff published his research on chemical kinetics, naming it Études de Dynamique chimique ("Studies in Chemical Dynamics"), in which he described a new method for determining the order of a reaction using graphics, and applied the laws of thermodynamics to chemical equilibria. He also introduced the modern concept of chemical affinity. In 1886 he showed a similarity between the behaviour of dilute solutions and gases. Until 1895 he worked on Svante Arrhenius's theory of the dissociation of electrolytes. On 1896 he became professor to the Prussian Academy of Science at Berlin. His studies of the salt deposits at Stassfurt contributed to Prussia's chemical industry. In 1887 he and German chemist Wilhelm Ostwald founded an influential scientific magazine named Zeitschrift für physikalische Chemie ("Journal of Physical Chemistry"). He also worked with Svante Arrhenius on salt solutions and their ions.

The Nobel Prize in Chemistry

Van 't Hoff became a lecturer in chemistry and physics at the Veterinary College in Utrecht. He then became a professor of chemistry, mineralogy, and geology at the University of Amsterdam for almost 18 years before eventually becoming the chairman of the chemistry department. In 1896 van 't Hoff moved to Germany where he finished his career at the University of Berlin in 1911. In 1901 he received the first Nobel Prize in chemistry for his work with solutions. This can generally be summarized by stating that very dilute solutions follow mathematical laws that closely resemble the laws describing the behavior of gases.

Honours and awards

Van 't Hoff in the 1900s at the height of his career.

In 1885 he was appointed member of the Royal Netherlands Academy of Sciences. Other distinctions included the honorary doctorates of Harvard and Yale 1901, Victoria University, Manchester 1903, Heidelberg 1908; the Davy Medal of the Royal Society 1893 (along with Le Bel), Helmholtz Medal of the Prussian Academy of Sciences 1911; he was also appointed Chevalier de la Légion d'honneur 1894, Senator der Kaiser-Wilhelm-Gesellschaft (1911). Van 't Hoff was also honorary member of the British Chemical Society in London, the Royal Academy of Sciences, in Göttingen 1892, American Chemical Society 1898, and the Académie des Sciences, in Paris 1905.

He was indeed a prominent scientist of his time. Of his numerous distinctions, he regarded his winning of the first Nobel Prize in Chemistry as the culmination of his career.

Van 't Hoff died at the age of 58, on 1 March 1911, at Steglitz near Berlin from tuberculosis.

See also

References

  • E. W. Meijer (2001). "Jacobus Henricus van 't Hoff; Hundred Years of Impact on Stereochemistry in the Netherlands". Angewandte Chemie International Edition 40 (20): 3783. doi:10.1002/1521-3773(20011015)40:20<3783::AID-ANIE3783>3.0.CO;2-J.  
  • Trienke M. van der Spek (2006). "Selling a Theory: The Role of Molecular Models in J. H. van 't Hoff's Stereochemistry Theory". Annals of Science 63 (2): 157. doi:10.1080/00033790500480816.  
  • Kreuzfeld HJ, Hateley MJ. (1999). "125 years of enantiomers: back to the roots Jacobus Henricus van 't Hoff 1852-1911". Enantiomer 4 (6): 491–6.  

Further reading

  • Patrick Coffey, Cathedrals of Science: The Personalities and Rivalries That Made Modern Chemistry, Oxford University Press, 2008. ISBN 978-0-19-532134-0

External links


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