Academic Integrity: tutoring, explanations, and feedback — we don’t complete graded work or submit on a student’s behalf.

Wait a minute, before we start talking about integrating the second order rate e

ID: 967144 • Letter: W

Question

Wait a minute, before we start talking about integrating the second order rate equation, let's make sure you have a reasonable understanding of first order equations.  Select all of the following that are true about first order reactions.

A. The rate of a first order reaction does not change during the course of the reaction.

B. The integrated first order equation shows us that a plot of [A] vs time will be linear for a first order reaction.

C. The integrated first order equation shows us that a plot of ln[A] vs time will be linear for a first order reaction.

D. The slope of the plot of ln[A] vs time for a first order reaction, equals k.

E. The half life of a first order reaction does not change as the [A] changes.

F. The rate of a first order reaction is not constant throughout the reaction. The rate is slowing down.

G. The slope of the plot [A] vs time for a first order reaction equals k.

Explanation / Answer

A is false since it is for zero order

B is false since its for zero order

C is true since for 1st order t= ( 1/k) ln (a/a-x)

D is false slope = -k   for ln A vs t

E True   , half life given by t1/2 = 0.693 / k  

F true

G fase