Problem: The following data show the rate constant of a reaction measured at several different temperatures.                   Temperature(K)                              Rate Constant (1/s)                           300                                                 3.37×10-3                           310                                                 1.08×10-2                           320                                                 3.21×10-2                           330                                                 8.96×10-2                           340                                                 0.235a. Use an Arrhenius plot to determine the activation barrier for the reaction.b. Use an Arrhenius plot to determine frequency factor for the reaction.

FREE Expert Solution

We have plotted the given data in lnk (y) vs. 1/T (x). The graph and line formula is:


This means we need to use the two-point form of the Arrhenius Equation:


ln k=-EaR 1T + ln A  y  =     m    x  +   b


where: 

m = slope

b = y-intercept

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Problem Details

The following data show the rate constant of a reaction measured at several different temperatures.
                   Temperature(K)                              Rate Constant (1/s)
                           300                                                 3.37×10-3
                           310                                                 1.08×10-2
                           320                                                 3.21×10-2
                           330                                                 8.96×10-2
                           340                                                 0.235

a. Use an Arrhenius plot to determine the activation barrier for the reaction.

b. Use an Arrhenius plot to determine frequency factor for the reaction.

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