Question

Answer of 4.5 and 4.6

Answer 1

4.5
t = (2.303/k) * log(Ao/A)
t = (2.303/(1.15*10^-3)) * log(5/3)
t = 444.276 seconds

4.6
k = 0.693/t
k = 0.693/(60 * 60)
k = 0.0001925 s^-1
k = 1.925 * 10^-4 s^-1