Chemical Kinetics and Nuclear ChemistryHard

Question

For the first-order reaction Tav (average life), T50 and T75 in the increasing order are :

Options

A.T50 < Tav < T75
B.T50 < T75 < Tav
C.Tav < T50 < T75
D.Tav = T50 < T75

Solution

We know
tav = 1.44 × t50%
and     t75% = 2 t50%
Then    t50% < tav < t75%

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