46. Solution to Chemistry Problem
188. Table 9 shows the values of the rate constants at different temperatures for a reaction proceeding in the nth order. For first-order reactions, the reaction rate constant has the dimension s-1, and for second-order reactions, the units of measurement of the constant correspond to cm3/s.mol. Based on the available data, calculate:
a) the activation energy of the reaction;
b) the pre-exponential factor in the Arrhenius equation;
c) the heat of activation of the reaction;
d) the temperature coefficient of the reaction rate;
d) the amount of substance consumed during time τ, if the initial concentrations of the reagents are equal to C0 (kmol/m3)
Table 9
No. Reaction T, K k τ, min C0
188 2NO2→2NO O2
n = 2
350
360
370
380 1.119.10-4
4.130.10-4
1.119.10-3
2.999.10-3 89 3.85
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