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Chemistry Report On Ammonia Introduction This report has been developed to inform you on the process of making ammonia using the Haber process and the effects of equilibrium Equilibrium Reversible changes often reach a state of balance or equilibrium Melting ice and water are in equilibrium at 0 Degrees Celsius For equilibrium to occur there must be a closed system and the reaction must be reversible At equilibrium 1There is no apparent change activity continues on a micro level 2The rate of the forward is equal to reverse 3The concentrations remain constant Changes in Concentration Increase the yield of product by increasing concentration of reactant removing product from equilibrium for example the equation N 2 g 3H 2 g 2NH 3 g At equilibrium 0 683 M 880 M 105 Add NH 3 so that its concentration 365 M Position of equilibrium shifts to left showing us a reverse and forward reaction taking place to form equilibrium Changes in Volume and Pressure Changes in Volume and Changes in Volume and Pressure Little effect on reactions in solution little effect on reactions in solution effect can be larger on reactions in gas phase Increase in pressure shifts equilibrium to side that has fewer moles of gas Changes in Temperature Changes value of equilibrium constant A temperature increase favors an endothermic reaction and a temperature decrease favors an exothermic reaction History In the 1860s two French chemists Marcellin Berthelot and Pean de St Gilles established some of the main ideas about chemical equilibrium by studying the reversible reaction which forms ethyl ethanoate This ester is now an important industrial solvent used in lacquers adhesives plastics and food flavoring The equilibrium position depends on the temperature and the pressure chose when the
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