Problem: For reactions with the following activation energies, which will have the greatest rate at 298 K? Hint: Assume that the frequency factor, A, in the Arrhenius equation is the same for each of the reactions. A. Ea = 10 kJ/mol B. Ea = 15 kJ/molC. Ea = 20 kJ/molD. Ea = 25 kJ/molE. Ea = 30 kJ/mol

FREE Expert Solution

Recall the two-point form of the Arrhenius Equation:


ln k=-EaR 1T + ln A


where: 

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


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Problem Details

For reactions with the following activation energies, which will have the greatest rate at 298 K? Hint: Assume that the frequency factor, A, in the Arrhenius equation is the same for each of the reactions. 

A. Ea = 10 kJ/mol 

B. Ea = 15 kJ/mol

C. Ea = 20 kJ/mol

D. Ea = 25 kJ/mol

E. Ea = 30 kJ/mol

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