For zero order reactions [A] = [A]o - kt
Where
[A]o = initial concentration = 2.600M
[A] = concentration ate time t = 2.300 M
k = rate constant = 2.50x10-1 M/sec
t = time taken = ?
Plug the values we get t = ([A]o - [A]) / k
                                  Â
= ( 2.600 - 2.300)M / (2.50x10-1 M/sec)
                                  Â
= 1.2 s x ( 1 min / 60 s)
                                  Â
= 0.02 min
