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 -

Options

A. `0.1` s
B. `0.4` s
C. `0.2` s
D. `0.8` s

Answer

B

Explanation

`t_(1//2) prop(1)/(a^(n-1))`
For zero oder reaction n=0
So `t_(1//2)propa`
So
`((t_(1//2))_(1))/((t_(1//2))_(2))=(a_(1))/(a_(2))`
`(0.2)/((t_(1//2))_(2))=([A_(0)])/(2[A]_(0))`
`t_(1//2)=0.4` sec