Question

1) A certain first order reaction has a rate constant of 0.038 min^-1. How much of the reactant will remain if the reaction is run for 2.5 hours and the initial concentration of the reactant is 0.35 M?

2)Which of the following correctly represents a first order integrated rate law? (Select all that are correct, there may be more than one.)

	A.	[A]0 = [A]te-kt
	B.	[A]t = [A]0ekt
	C.	ln [A]t = ln [A]0 - kt
	D.	[A]t = [A]0e-kt
	E.	ln [A]t = ln [A]0 + kt
	F.	ln [A]t - ln [A]0 = - kt

3) Describe how you can determine the rate constant for a first order chemical process (A --> products) if you are given data which has the concentration of A given at 10 different points of time, starting with t = 0.

4) The initial concentration of a reactant is 1.1 M. If the rate constant for a chemical reaction involving this reactant is 0.039 s^-1, how long will it take for the reactant's concentration to be 0.08 M?

5) What fraction of a reactant will remain after 21.9 seconds if the half-life is 64 seconds?