esterification by refluxing a carboxylic acid with an alcohol in the presence of an acid catalyst . Fischer attended the University of Strasbourg in 1872, and earned a doctorate in chemistry with his study of phenolphthalein under Professor Adolf von Baeyer. He was a 1902 recipient of the Nobel Prize in Chemistry, as well as many other awards. Fischer was born in Euskirchen, Germany on October 9th, 1852. He was the only child of a German businessman. Fischer spent three years with a private tutor
Introduction As the world revolves, there are a lot of changes that happens in the world. For example, in terms of technology, there are a lot of improvements already. Back then, for example, features of mobile phones were only call and text. But more ideas have been developed and people have started to think about how to improve some things so that they can attract more consumers. The result is there are now more, in this case, high-tech phones with carious incredible features such as access to
DDT was first discovered as an insecticide by a Swiss scientist named Paul Hermann Muller. The DDT compound saved many lives after helping one billion people live malaria free by killing disease-carrying insects for thirty years after its discovery. However, the miraculous benefits of DDT resulted in negative side effects such as, DDT persistence in the environment, DDT accumulation in fatty tissues, and the compound’s ability to travel long distances in the upper atmosphere, which posed a risk