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A zero-order reaction, Ararr Product, wi...

A zero-order reaction, `Ararr` Product, with an initial concentration `[A]_(0)` has a half-life of `0.2` s. If one starts with the concentration `2[A]_(0)`, then the half-life is -

A

0.1 s

B

0.4 s

C

0.2 s

D

0.8 s

Text Solution

Verified by Experts

The correct Answer is:
B
`t_(1//2)prop(1)/(a^(n-1))`
for zero order reaction n = 0
so `t_(1//2)propa`
so
`((t_(1//2)))/((t_(1//2)))=(a_(1))/(a_(2))`
`(.2)/((t_(1//2))_(2))=([A_(0)])/(2[A]_(0))`
`t_(1//2)=.4sec`
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