211 hour
Hey guys,pls solve this
The time for half life period of a certain reaction A®Products is 1 hour. When the initial concentration
of the reactant ‘A’, is 2.0 mol L –1 , how much time does it take for its concentration to come
from 0.50 to 0.25 mol L –1 if it is a zero order reaction ?
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7 Answers
1you completely sure ? so far,all coaching institutes gave Ans = 0.25 hr
11Ans ) t 1/2 = [A]02k
so k = 1
since it's a first order reacn, therefore, k = [ A] 1 - [A]2t
1 = 0.25t
so t = 0.25 hrs
11@tushar does'nt the qsn says "if it was a zero order reaction..."??
1ya sandipan he's done the needful for 0 order reaction..
for a reaction of nth order the half life is directly proportional to [A0]1-n (where n is the order,equal to 0 here and [A0] is the initial concentration) ie directly proportional to [A0]1 which has been used here..omn calculation half life comes out to be [A0]/2k