Chemical Kinetics and Nuclear ChemistryEasy
Question
In first order reaction, the concentration of the reactant decreases from 0.8 M to 0.4 M in 15 minutes. The time taken for the concentration to change from 0.1 M to 0.025 M is
Options
A.30 minutes
B.60 minutes
C.7.5 minutes
D.15 minutes
Solution
t1/2 = 15 minutes
∴ No. of half lives s = 2
(∴ for change of 0.1 to 0.025)
is 30 minutes
∴ No. of half lives s = 2
(∴ for change of 0.1 to 0.025)
is 30 minutes
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