//Section-5,Example-5,Page no.-D.6
//To show that following data represents a first order reaction.
clc;
//k=(2.303/t)*log((V_a-V_0)/(V_a-V_t))
k_25=(2.303/25)*log10((42.1-19.2)/(42.1-24.2))
k_40=(2.303/40)*log10((42.1-19.2)/(42.1-26.6))
k_60=(2.303/60)*log10((42.1-19.2)/(42.1-29.5))
//constant value of k, so it is a first order reaction.