Time for half change for a first order reaction is 25 min. What time will be required for 99% reaction ?
Time for half change for a first order reaction is 25 min. What time will be required for 99% reaction ?
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Explanation:
we have the relation between the half life and the rate constant as half life
t1/2=.693/k
k is the rate constant
or k=.693/t1/2 =.693/25 min-1
=2.772*10-2 min-1
time required for 25% completion
k=2.303/t x log (initial conc/final conc)
2.772*10-2=2.303/t x log (100/1)
t=166.16 min
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