Question

(a) Define rate constant of reaction.
(b) A first order reaction takes 40 mins for 30% decomposition. Calculate=t_w

Answer 1

(a) Rate constant : It is the rate of chemical reaction when the concentration of
reactant taken as unity at a given temperature.
 

(b) Let initial conc. = a
Conc. after 40 mins. =
= 0.70 a