State the Arrhenius equation and identify the physical meaning of each parameter.

• A. k = A e^{-Ea/(RT)}; A is the pre-exponential factor, Ea is activation energy, R is the gas constant, T is temperature.
• B. k = A e^{Ea/(RT)}; A is the pre-exponential factor, Ea is activation energy.
• C. k = A e^{-Ea/(R T)}; R is the universal gas constant, T is temperature, Ea is activation energy.
• D. k = A e^{-Ea/(RT)}; A is the frequency factor, Ea is activation energy.

Answer: (A)