Steven C. answered • 03/13/16

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Mathematics Tutor Steven

STARTING POINT: (not sure how you are running your experiment exactly)

Assuming that you are at saturation concentration (i.e. zeroth order decomposition). The rate of reaction can be approximated by:

r = k(T)

Where k(T) is the rate constant which varies with time

Using the Arrhenius Law:

ln(k) = a + b/T

where a and b are constants defined by: a = ko (collision frequency), b = Ea/R (thermal activation energy)

Since the rate of reaction is the change in concentration with respect to time, collect the concentrations at each interval and define k by:

k = (C1 - C0)/30 (where C1 is the current measured concentration and C0 is the previous concentration).

Then plot ln(k) vs. 1/T to determine the rate of reaction at various temperatures.