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The Life and Work of Friedrich Wöhler — by Robin Keen is considered to be "the first detailed scientific biography" of Wöhler. Friedrich Wöhler was first married to his cousin Franziska Maria Wöhler b.

The couple had two children, a boy August, b. May in Berlin and a girl named Sophie b. The couple had four daughters Fanny, Helene, Emilie and Pauline.

From Wikipedia, the free encyclopedia. German chemist. Göttingen , German Empire. Science History Institute. Retrieved 12 May Buttner, Johannes ed.

The discovery of the elements 6th ed. History of Chemistry. Martino Publishing. The Chemical Educator.

Retrieved 19 May Skrabec 6 February Aluminum in America: A History. The Aluminum Smelting Process. Retrieved 18 May All about aluminium.

Royal Society of Chemistry. Retrieved 1 January Liebigs Ann. Journal of Chemical Education. Chemistry International.

Annalen der Physik und Chemie. Bibcode : AnP Chapter 3: Chemie der Kohlenwasserstoffe. Excursus pg.

University of California Press ed. Bibcode : Natur. Studies in History and Philosophy of Science. Nachrichten aus der Chemie.

Graz, Leykam, Mensch, Wissenschaft, Magie. Numbers, Ronald L. Harvard university press, , Retrieved on 28 May Oxford Dictionary of National Biography online ed.

Oxford University Press. Subscription or UK public library membership required. Dictionary of National Biography. The Royal Society.

Retrieved 16 May Royal Society of Edinburgh. Copley Medallists — Namespaces Article Talk. Views Read Edit View history. Help Community portal Recent changes Upload file.

Wikimedia Commons Wikisource. Download as PDF Printable version. Friedrich Wöhler c. Generative work in organic chemistry, Wöhler synthesis of urea.

Organic chemistry Biochemistry. Leopold Gmelin Jöns Jakob Berzelius. Augustus Voelcker Wilhelm Kühne. Library resources about Friedrich Wöhler.

Tipico diagramma di Wöhler in scala logaritmica. Costruzione di una curva di Wohler. Altri progetti Wikimedia Commons. Portale Ingegneria : accedi alle voci di Wikipedia che trattano di Ingegneria.

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Wöhler had an interest in the chemical composition of meteorites. He showed that some meteoric stones contain organic matter. He analyzed meteorites , and for many years wrote the digest on the literature of meteorites in the Jahresberichte über die Fortschritte der Chemie.

Wöhler accumulated the best private collection of meteoric stones and irons then existing. In , lacking his own laboratory facilities at Kassel, Wöhler worked with Justus Liebig in his Giessen laboratory.

Through their detailed analysis of the chemical composition of this oil, they proved by their experiments that a group of carbon , hydrogen , and oxygen atoms can behave chemically as if it were the equivalent of a single atom, can take the place of an atom in a chemical compound , and can be exchanged for other atoms in chemical compounds.

Specifically, in their research on the oil of bitter almonds, they showed that a group of elements with chemical composition C 7 H 5 O can be thought of as a single functional group, which came to be known as a benzoyl radical.

In this way, the investigations of Wöhler and Liebig established a new concept in organic chemistry referred to as compound radicals , a concept which had a profound influence on the development of organic chemistry.

Many more such functional groups were later identified by subsequent investigators with wide utility in chemistry.

Liebig and Wöhler explored the concept of chemical isomerism , the idea that two chemical compounds with identical chemical compositions could in fact be different substances because of different arrangements of the atoms in the chemical structure.

Liebig and Wöhler investigated silver fulminate and silver cyanate. These two compounds have the same chemical composition, yet are chemically different.

Silver fulminate is explosive, while silver cyanate is a stable compound. Liebig and Wöhler recognized these as being examples of structural isomerism, which was a significant advance in the understanding of chemical isomerism.

Wöhler has also been regarded as a pioneer in organic chemistry as a result of his demonstration of the laboratory synthesis of urea from ammonium cyanate , in a chemical reaction that came to be known as the " Wöhler synthesis ".

Heating ammonium cyanate converts it into urea, which is its isomer. In a letter to Swedish chemist Jöns Jacob Berzelius the same year, he wrote, 'In a manner of speaking, I can no longer hold my chemical water.

I must tell you that I can make urea without the use of kidneys of any animal, be it man or dog. Wöhler's demonstration of urea synthesis has become regarded as a refutation of vitalism , the hypothesis that living things are alive because of some special "vital force".

It was the beginning of the end for one popular vitalist hypothesis, the idea that "organic" compounds could be made only by living things.

In responding to Wöhler, Jöns Jakob Berzelius clearly acknowledged that Wöhler's results were highly significant for the understanding of organic chemistry, calling the findings a "jewel" for Wöhler's "laurel wreath".

Both scientists also recognized the work's importance to the study of isomerism , a new area of research. Wöhler's role in overturning vitalism is at times said to have become exaggerated over time.

This tendency can be traced back to Hermann Kopp 's History of Chemistry in four volumes, — He emphasized the importance of Wöhler's research as a refutation of vitalism, but ignored its importance to understanding chemical isomerism, setting a tone for subsequent writers.

Wöhler's discoveries had significant influence on the theoretical basis of chemistry. The journals of every year from to contain original scientific contributions from him.

The Scientific American supplement for stated that "for two or three of his researches he deserves the highest honor a scientific man can obtain, but the sum of his work is absolutely overwhelming.

Had he never lived, the aspect of chemistry would be very different from that it is now". Wöhler was elected a Fellow of the Royal Society of London in The Life and Work of Friedrich Wöhler — by Robin Keen is considered to be "the first detailed scientific biography" of Wöhler.

Friedrich Wöhler was first married to his cousin Franziska Maria Wöhler b. The couple had two children, a boy August, b.

May in Berlin and a girl named Sophie b. The couple had four daughters Fanny, Helene, Emilie and Pauline. From Wikipedia, the free encyclopedia.

German chemist. Göttingen , German Empire. Science History Institute. Retrieved 12 May Buttner, Johannes ed. The discovery of the elements 6th ed.

History of Chemistry. Martino Publishing. The Chemical Educator. Retrieved 19 May Skrabec 6 February Aluminum in America: A History.

The Aluminum Smelting Process. Retrieved 18 May All about aluminium. Royal Society of Chemistry. Retrieved 1 January Liebigs Ann.

Journal of Chemical Education. Chemistry International. Annalen der Physik und Chemie. Bibcode : AnP Tipico diagramma di Wöhler in scala logaritmica.

Costruzione di una curva di Wohler. Altri progetti Wikimedia Commons. Portale Ingegneria : accedi alle voci di Wikipedia che trattano di Ingegneria.

Categorie : Scienza dei materiali Diagrammi. Menu di navigazione Strumenti personali Accesso non effettuato discussioni contributi registrati entra.

Namespace Voce Discussione.

WГ¶hler - Tłumaczenie słowa «wuff» na 25 języków

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