Solution:
According to the first order kinetics:
When 75% reaction was completed.
Time required to completed 60% of reaction.
If 75% of a first order reaction was completed in 90 minutes, 60% of the same reaction would be completed in approximately (in minutes) _______________ .
(Take : log 2 = 0.30; log 2.5 = 0.40)
According to the first order kinetics:
When 75% reaction was completed.
Time required to completed 60% of reaction.