The rate constant for this first-order reaction is 0.320 s–1 at 400 °C.

Question

A--> Products
How long (in seconds) would it take for the concentration of A to decrease from 0.830 M to 0.220 M?

Answer 1

ln(No/N) = kt.
No = 0.830; N = 0.220, substitute k and solve for t.

Answer 2

4.15

Answer 3

Thog