Equilibria 4.0 / 5 based on 6 ratings ? ChemistryEquilibriaASAQA Created by: JasmineRCreated on: 02-05-16 18:30 What does the term dynamic mean? Forward and backward reactions are occurring at the same time 1 of 22 What temperatures give the highest yield of product? Low temperatures 2 of 22 What will happen to the equilibrium if the temperature is increased? It will move in the endothermic direction 3 of 22 What will happen to the equilibrium if the pressure is increased? It will shift towards the side with fewer moles of gas 4 of 22 If the number of moles of gas is the same on both sides of the equation, what will happen to the equilibrium if the pressure is changed? There will be no change 5 of 22 What is the problem with using low temperatures to get a higher yield? There will be a slow rate in reaction 6 of 22 What is Le Chatelier's principle? If an external condition is changed then the equilibrium will shift to oppose the change 7 of 22 What type of pressure gives a higher yield of product? High pressure 8 of 22 What is the problem in using high pressures in industry? They are expensive the produce 9 of 22 What effect does increasing the concentration have on the equilibrium? The equilibrium will shift to oppose this 10 of 22 What effect does a catalyst have on the position of equilibrium? No effect 11 of 22 Why doesn't a catalyst have any effect on the position of equilibrium? Because it speeds up the rate of both forward and backward reactions by the same amount 12 of 22 In the Haber process, what pressure and temperature is used? Low temperature, high pressure 13 of 22 True of false, the Haber process is exothermic? True 14 of 22 What pressure and temperature is used in the hydration of ethene to produce ethanol? Low temperature, high pressure 15 of 22 In the hydration of ethene to produce ethanol, why is a high pressure a problem? It leads to the unwanted polymerisation of ethene to poly(ethene) 16 of 22 In the production of methanol from CO what temperature and pressure is used? Low temperature, high pressure 17 of 22 In the contact process, what temperature and pressure is used? Low temperature, high pressure 18 of 22 What catalyst is used in the Haber process? Iron 19 of 22 What catalyst is used in the contact process? V2O5 20 of 22 What is the catalyst used in the production of methanol from CO? Chromium and zinc oxides 21 of 22 What catalyst is used the hydration of ethene to produce ethanol? Concentrated H3PO4 22 of 22
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