Problem: A reaction has a rate constant of 1.19×10−2 /s at 400. K and 0.690 /s at 450. K.What is the value of the rate constant at 425 K?

FREE Expert Solution
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FREE Expert Solution

We're being asked to determine the value of the rate constant at 425 K.

We’re given the rate constants at two different temperatures. This means we need to use the two-point form of the Arrhenius Equation:

ln k2k1=-EaR[1T2-1T1]

k1 = rate constant at T1
k2 = rate constant at T2
Ea = activation energy (in J/mol)
R = gas constant (8.314 J/mol•K)
T1 and T2 = temperature (in K)


Step 1: Calculate the activation energy, Ea.

We’re given the following values:

96% (4 ratings)
Problem Details

A reaction has a rate constant of 1.19×10−2 /s at 400. K and 0.690 /s at 450. K.

What is the value of the rate constant at 425 K?

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