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Concept
Johannes Nicolaus Brønsted
Summary
Johannes Nicolaus Brønsted (joˈhænˀəs ne̝koˈlɛːus ˈpʁɶnsteð; 22 February 1879 – 17 December 1947) was a Danish physical chemist, who developed the Brønsted–Lowry acid–base theory simultaneously with and independently of Martin Lowry.
Brønsted was born in Varde, Denmark on 22 February 1879. His mother died shortly after his birth and at the age of 14, Brønsted lost his father and moved to Copenhagen with his older sister and his stepmother. In 1897, Brønsted began his studies as a chemical engineer at the Polytechnic Institute in
Copenhagen. After his first degree, Brønsted changed fields and received his magister degree in chemistry in 1902 from the University of Copenhagen. In 1905, he became an assistant at the Chemical Institute and obtained his doctoral degree in 1908. In the same year, Brønsted became a professor of physical and inorganic chemistry at the University of Copenhagen.
In 1929, Brønsted was a visiting professor at Yale University. His research gained worldwide recognition, resulting in four Nobel prize nominations, a gold H. C. Ørsted Medal and being appointed as a fellow of the Royal Society and a member of the National Academy of Sciences.
Brønsted married Charlotte Warberg, whom he met during his first degree. The couple had four children. In World War II, Brønsted's opposition to the Nazis led to his election to the Danish parliament in 1947, but he was too ill to take his seat and died shortly after the election.
Early in his career, Brønsted studied chemical thermodynamics and later studied electrolyte solutions and carried out an extensive series of solubility measurements. These measurements led him to establish general laws which were later confirmed when the Debye–Hückel theory was proposed.
Brønsted is best known for his work on reaction kinetics, in particular acid–base reactions. In 1923, he recognized that acid–base reactions involved the transfer of a proton, from the acid (proton donor) to the base (proton acceptor).
Official source
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