Question: Changes to temperature: Endothermic reaction: Exothermic reaction: 8. reactants + heat products reactants products + heat The reaction: 2SO2(g) + O2(g) 2SO3(g) 160. AH

Changes to temperature: Endothermic reaction: Exothermic reaction: 8. reactants + heat products

Changes to temperature: Endothermic reaction: Exothermic reaction: 8. reactants + heat products reactants products + heat The reaction: 2SO2(g) + O2(g) 2SO3(g) 160. AH = positive = negative AH=-197kJmoll- is discussed on page a) Is the forward reaction exothermic or endothermic? b) Is the reverse reaction endothermic or exothermic? c) What is the endothermic or exothermic reaction favoured when temperature of an equilibrium system is increased? Explain using Le Chatelier's Principle. d) What would happen to the Keq for this reaction at a higher temperature? Why? e) What would happen when the temperature is decreased?

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