Henri Louis Le Chatelier was born in Paris, France, on October 8, 1850 and died on September 17, 1936 in Miribel-les-Echelles, France. Le Chatelier was a chemist who discovered the "Le Chatelier principle" which proved that if a modification or constraint was applied to a chemical system at equilibrium, the system would regulate itself and in turn adjust to a new equilibrium neutralizing the previous change. Possible changes or stresses that may occur may include temperature, concentration, pressure, volume, catalysts and noble gases. Henri Le Chatelier grew up in a family environment with a large amount of knowledge about science and technology since his family included architects, scientists and engineers as well. He came from a Roman Catholic family and had five siblings (one sister and four brothers). Henry's mother had raised him and his siblings in a very strict manner, where discipline and respect had to be implemented. His father, Louis Le Chatelier and his relatives were a major model of influence for Henri, as they helped pioneer the Martin-Siemens steel industry, railway production, mining and the French aluminum industry. This had a decisive impact on the development of Henri's career. During the Franco-Prussian War (1870-1871), Le Chatelier had been a lieutenant in the army. He had left the army and returned to college where he attended Collège Rollin in Paris. It was there that he obtained an undergraduate degree in the years 1887 and 1868. A year later, on October 25, 1869, he decided to follow the same path as his father and enrolled at the Polytechnic School where he obtained excellence. results. The following year, during September 1870, Le Chatelier...... middle of paper ......d balance will be reached more quickly than usual.6. Noble gasesExample: H2(g) + I2(g) + He(g) = 2HI(g) + He(g) Due to the fact that noble gases tend to rarely react with other elements most of the time , then adding one to a reaction will have no effect or impose any change in equilibrium when the volume remains the same.The equilibrium will shift to the side of the reaction with fewer molecules as the volume increases.iv ) Question n°3 Page 459 of the manual3. a) The equilibrium will shift to the right as oxygen increasesb) The equilibrium will shift in the opposite direction/away from energy as you increase the temperaturec) The equilibrium will shift in the right direction as NO (g) if removed/moved away from the systemd) The balance will remain neutral with no net change when argon gas (noble gas) is added to the system and when the volume also remains the same..