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It will take 21.57min for the concentration of A to reach
0.080 M if The kinetics of a gas phase reaction of the form A → Products results
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Unit of rate constants for
0 order reaction = M/s
1st order reaction = sec-1
2nd order reaction = M-1s-1
So, this reaction is a 0-order reaction because it's rate constant has a unit M/min
Now half-life of 0 order reaction = Ao/2K
Where Ao = initial concentration
K = rate constant
using kinetics of a gas
Given,
Ao = 0.337M and K = 0.00781M/min
Putting all the values we get
t1/2 = 0.337/2×0.00781 min
On calculating
t1/2 = 21.57min
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