Answer to Question #170807 in General Chemistry for Zoan

Question

A particular first-order reaction has a rate constant of 1.55x10^2 s^-1 at 35.0 degrees Celsius. What is the magnitude of k at 95.0 degrees Celsius if Ea=55.5 kJ/mol?

Answer 1

lnK₁/K₂= E_a/R (1/T₁ - 1/T₂)

ln155/K₂= 55.5x10³/8.314 (1/35-1/95)

ln155/K₂= 6675.489(0.018)

ln155/K₂= 120.46

155/K₂= e^120.46

K₂= 155/2.0x10⁵²

K₂= 7.50 x 10^-51