C3 Reversible Reactions and Haber Process 0.0 / 5 ? ChemistryHaber and industrial processesGCSEAQA Created by: jadedavisonweirCreated on: 17-03-16 17:49 what is a reversible reaction where the products of the reaction react to turn back into the reactants 1 of 19 whats an equilibrium when the rate at which products tun into reactants and the reverse reaction are at an equal rate 2 of 19 how do you get an equilibrium in a closed system... where the products and reactants cannot escape the system 3 of 19 how can you alter the position of equilibrium change temperature and pressure 4 of 19 in temperature: if it is raised or lowered which side will it favour raised favours endothermic, lowered favours exothermic... due to the energy it can absorb or release 5 of 19 in pressure: if it is raised or lowered which side will it favour raised the side that has the least number of molecules, lowered the side with the most number of molecules 6 of 19 what do catalysts do reduce the time it takes to reach equilibrium but does not change position of it 7 of 19 why dont they change the position of equilibrium speeds the reaction in both directions 8 of 19 what is ammonia used for fertiliser 9 of 19 what are the 2 things needed for ammonia hydrogen and nitrogen 10 of 19 what is the equation N2 + 3H2 = 2NH3 and heat 11 of 19 how is the nitrogen obtained distillation of air 12 of 19 how is the hydrogen obtained electrolysis of water 13 of 19 what are the 3 industrial conditions 200 atmospheric pressure, 450 degree celsius, iron catalyst present 14 of 19 why is the temperature 450 degrees even though it lowers the yield compromise between the rate of reaction and yield 15 of 19 why is the pressure 200 when it works better at a higher pressure would be more expensive 16 of 19 why are iron catalysts used reach equilibrium faster 17 of 19 how is the ammonia removed cooled as it has a lower boiling point than H2 and N2 so it condenses 18 of 19 what happens to unreacted H3 and N2 and why sent to the top of the column to go through it again to save money and increase efficiency 19 of 19
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