AQA Jun 2014 Paper 2 Q1

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section a answer all questions in the spaces provided do not write outside the box a dynamic equilibrium is established when gas a is mixed with gas b at a given temperature a g b g c g d g figure shows how the concentrations of reactants and products change with time figure concentration mol dm c g d g a g b g time s a i on the appropriate axis of figure place an x to show the time when equilibrium is first established mark a ii state how the rate of the forward reaction and the rate of the reverse reaction are related to each other at equilibrium mark wmp jun chem do not write outside the box b give the meaning of the term dynamic in the context of a dynamic equilibrium mark c the total pressure on the system is increased at constant temperature c i state and explain the effect if any of this change on the position of this equilibrium marks effect explanation c ii state and explain the effect if any of this change on the time taken to reach this equilibrium marks effect explanation turn over wmp jun chem

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