Arrhenius equation

  • Thread starter fhlfw
  • Start date
  • #1
2
0
I know the Arrhenius equation is k=Ae^-Ea/RT
The rate constant k is directly proportional to 1/t
(t stands for the time for the reaction to reach a point)

So I wonder if we can substitute k by 1/t in the Arrhenius equation to become 1/t=Ae^-Ea/RT ?

Thanks a lot
 

Answers and Replies

  • #2
DrClaude
Mentor
7,616
4,038
The rate constant k is directly proportional to 1/t
The rate constant is a constant, it doesn't vary with time.
 
  • #3
2
0
My bad, I have made a mistake. It should be:

The rate of reaction is directly proportional to both rate constant k and 1/t
So are k and 1/t interchangeable in the Arrhenius equation?
 
  • #4
2,167
499
The rate constant k is directly proportional to 1/t
(t stands for the time for the reaction to reach a point)

For the case that you mean something like this:

[itex]\dot \xi = \frac{{\Delta \xi }}{{\Delta t}}[/itex]

That is just an approximation (except for zero-order reactions).

The rate constant is a constant, it doesn't vary with time.

Accorting to the Arrhenius equation the rate constant is a function of temperature. If temperature changes over time than the rate constant changes over time too.
 

Related Threads on Arrhenius equation

Replies
1
Views
935
Replies
2
Views
3K
  • Last Post
Replies
1
Views
3K
  • Last Post
Replies
3
Views
5K
  • Last Post
Replies
3
Views
2K
Replies
3
Views
10K
  • Last Post
Replies
3
Views
3K
  • Last Post
Replies
4
Views
26K
Replies
11
Views
4K
Top