The decomposition of N2O5 follows first-order kinetics based on the reaction below.
2N2O5(g) O2(g) + 4NO2(g)
The rate constant of the reaction at 25ºC is 3.46 x 10-5 /s. How long (in seconds) would it take for an initial concentration of 0.050 M to decrease to 0.015 M? What is the half-life of the reaction?
The reaction is
In question we have given that
Initial concentration M
Final concentration M
Rate constant(K) per second
Now for the first order reaction:
Now half life period for the first order reaction