Wilhelm Ostwald /

Friedrich Wilhelm Ostwald (Latvian: Vilhelms Ostvalds; 2 September 1853 – 4 April 1932) was a Baltic German chemist. He received the Nobel Prize in Chemistry in 1909 for his work on catalysis, chemical equilibria and reaction velocities. Ostwald, Jacobus Henricus van 't Hoff, and Svante Arrhenius are usually credited with being the modern founders of the field of physical chemistry. Ostwald was born ethnically Baltic German in Riga, to master-cooper Gottfried Wilhelm Ostwald (1824–1903) and Elisabeth Leuckel (1824–1903). He was the middle of two brothers, Eugen (1851–1932) and Gottfried (1855–1918). Ostwald graduated from the University of Tartu, Estonia, in 1875, received his Ph.D. there in 1878 under the guidance of Carl Schmidt, and taught at Tartu from 1875 to 1881 and at Riga Polytechnicum from 1881 to 1887. Wilhelm Ostwald is usually credited with inventing the Ostwald process (patent 1902), used in the manufacture of nitric acid, although the basic chemistry had been patented some 64 years earlier by Kuhlmann, when it was probably of only academic interest due to the lack of a significant source of ammonia. That may have still been the state of affairs in 1902, although