A particular first- order reaction has a rate constant of 1.35 × 10²s^-¹at 25°C. What is the magnitude of k at 95°C if E_a= 55.5 kJ/mol?

Question

Quizplus · Accepted Answer

The Arrhenius equation is used to calculate the rate constant at a different temperature: k2 = k1 * exp[(Ea/R) * (1/T1 - 1/T2)]. Using the given values, k1 = 1.35 × 10^2 s^-1, Ea = 55.5 kJ/mol (or 55500 J/mol), R = 8.314 J/mol·K, T1 = 298 K, and T2 = 368 K, the calculation gives k2 ≈ 9.60 × 10^3 s^-1.

A Particular First- Order Reaction Has a Rate Constant of 1.35