The reaction of propylxanthate ion in acetic acid buffer solutions has the mechanism A⁻ + H⁺→ P. Near 30°C the rate constant is given by the empirical expression k₂ = (2.05 × 10¹³)e^{−(8681 K)/T} dm³ mol⁻¹ s⁻¹. Evaluate the energy and entropy of activation at 30°C.