Pre Equillibrium

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

Jielena_Bragasin2G
Posts: 104
Joined: Sat Aug 24, 2019 12:18 am
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Pre Equillibrium

I don't quite understand the concept of pre equilibrium; can someone expand on Lavelle's explanation: "the reaction before the rate limiting step at the equilibrium constant K"?

Hui Qiao Wu 1I
Posts: 56
Joined: Fri Aug 30, 2019 12:16 am

Re: Pre Equillibrium

As a forward rxn is happening, the products are accumulating. Since thee are so many products, the rxn also wants to reverse the direction to try to get rid of the products (I am not sure if the rxn actually reverses the direction or it is just a state it wants to achieve). Therefore, this whole situation mimics the characteristics of equilibrium.

Chantel_2I
Posts: 109
Joined: Sat Sep 07, 2019 12:19 am

Re: Pre Equillibrium

If the second step is the "slow step," there will be a buildup of the product of the first step, so the first reaction will tend to go in the reverse direction as well, creating an equilibrium scenario.