Answer:
t = 2,57 days
Explanation:
A reaction follows the first-order kinetics when attend the formula:
[tex]ln\frac{[A]_t}{[A]_0} = -kt[/tex]
Where [A]₀ is the initial concentration of the toxin (0,63mg/L) and [A]t is the half of the initial concentration (0,315mg/L). k is 0,27 day⁻¹ and t is the time the descomposition takes. Replacing:
[tex]ln\frac{0,315}{0,63} = -0,27day^{-1}t[/tex]
t = 2,57 days
I hope it helps!
