We’re being asked to determine the frequency factor (A) of a reaction given that the plot of ln k vs. 1/T has a slope of −1.5275 × 104 and an intercept of 23.6.
We’re given the plot of ln k (y) vs. 1/T (x).
This means we need to use the two-point form of the Arrhenius Equation:
k = rate constant
Ea = activation energy (in J/mol)
R = gas constant (8.314 J/mol • K)
T = temperature (in K)
A = Arrhenius constant or frequency factor
A series of experiments were performed to determine the rate constant for the reaction
2H2S(g) + 3O2(g) → 2H2O(g) + 2SO2(g)
at different temperatures. A plot of ln k against 1/T was a straight line with a slope of −1.5275x104 and intercept of 23.6. What is the frequency factor?
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