The rate constant for a first order reaction whose half life is 480 sec, is :

Options

A. `1.44 xx 10^(-3)s^(-1)`
B. `1.44 s^(-1)`
C. `0.72 xx 10^(-3)s^(-1)`
D. `2.88 xx 10^(-3)s^(-1)`

Answer

A

Explanation

For the first order reaction
`implies " "k=(0.693
)/(t_(1//2))=(0.693)/(480 sec)=1.44 xx 10^(-3)s^(-1)`