## Determining k vs k'

Arrhenius Equation: $\ln k = - \frac{E_{a}}{RT} + \ln A$

Suzanne Reyes-Ingwersen 3A
Posts: 11
Joined: Wed Sep 21, 2016 2:56 pm

### Determining k vs k'

Does it matter which rate constant you assign to be k and which one you assign to be k'? If so, how do you tell the difference?

Ryan Doyle 3E
Posts: 10
Joined: Fri Jul 15, 2016 3:00 am

### Re: Determining k vs k'

k is generally the forward rate constant with reactions going to products and k prime is generally the rate constant for the flipped reaction, where the original products are now going to the reactants.

Christopher Reed 1H
Posts: 33
Joined: Wed Sep 21, 2016 2:57 pm
Been upvoted: 1 time

### Re: Determining k vs k'

Typically k is the rate constant for the forward reaction and k' is the rate constant for the reverse reaction. $k_{1}$ can also represent the forward reaction rate constant and $k_{-1}$ represents that of the reverse. In practice though, as long as you define what your rate constant is you're okay.

Stephanie_Martinez3E
Posts: 9
Joined: Wed Sep 21, 2016 2:58 pm

### Re: Determining k vs k'

k is the rate at which the forward reaction goes and k' is the rate of the reverse reaction. It will usually tell you whether they are talking about the forward/ reverse reaction.