Answer:
t=3.7 sec this much time it will take
Explanation:
first order: the reaction in which rate depends only on one ractanta and depend linearly.
As given the question that reaction is first order so we will use first order kinetic equation.
Assume that initial concentration is a
then the final concentration is 0.06a
[tex]Kt=ln\frac{a}{0.06a}[/tex]
[tex]k=0.76s^{-1}[/tex]
after calculation
t=3.7 sec