slowest step - rate determining step, rate = k[A] - units of k =s-1, initial rate - gradient of tangent to curve at t=0, concn x2, rate x4 - 2nd order, straight line through origin of rate-concn graph - 1st order rate concn graph, constant half life - 1st order concentration time graph, time taken for half the mass to be lost - half life, Half life lengthens with time - 2nd order concn time graph,

Match up rates

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