AQA Jun 2014 Paper 4 Q3

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do not write outside the box a table shows the results of three experiments to investigate the rate of reaction between compounds a and b dissolved in a given solvent all three experiments were carried out at the same temperature table experiment experiment experiment initial concentration of a mol dm initial concentration of b mol dm initial rate mol dm s a i deduce the order of reaction with respect to a tick one box mark mark order of reaction with respect to a tick a ii deduce the order of reaction with respect to b tick one box order of reaction with respect to b tick wmp jun chem do not write outside the box b the reaction between two different compounds c and d is studied at a given temperature the rate equation for the reaction is found to be rate k c d b i when the initial concentration of c is mol dm and the initial concentration of d is mol dm the initial rate of reaction is mol dm s calculate the value of the rate constant at this temperature and deduce its units marks calculation units of rate constant b ii the experiment in question b i is repeated at the same temperature but after the addition of extra solvent so that the total volume of the mixture is doubled deduce the new initial rate of reaction mark turn over for the next question turn over wmp jun chem

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