Reaction; Rate Constant

Question

For the following first order reaction, the rate constant is 0.0118. If [A]₀ = 6.12, calculate [A] at 2.32 seconds.

2 A → 3 B

Answer 1

To solve this problem we will use the equation for the integrated first-order rate law:

ln[A] = -kt + ln[A]₀

ln[A] = - (0.0118s^-)(2.32s) + ln(6.12M)

That is how the problem should be set up. I will leave the calculation for you to do.

Hopefully that helps.