Question

In the Arrhenius equation for a certain reaction , the value of A and Ea (activation energy) are 4x1013 s-1 and 96kJ/mol , respectively . If the reaction is of first order , at what temperature will its half life period be 10 mins?

Answer 1

t½ = 10 minutes = 600 seconds

So, Rate constant k = 0.6931/600 = 0.0011

Putting this value in equation

log k = log A - Ea/RT

log 0.0011 = log 4×10^13 — 98.6×1