Using Steady State Approx/Pre-Equilibrium Approx


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Sjeffrey_1C
Posts: 108
Joined: Wed Feb 20, 2019 12:17 am

Using Steady State Approx/Pre-Equilibrium Approx

Postby Sjeffrey_1C » Fri Mar 13, 2020 7:38 am

I'm confused as to when we would use a steady state approximation or equilibrium approximation, versus when we would just use the rate of the slow step?

For example, question 7C.7 asks that we find the rate law for the formation of the product, and the answer provided is just the rate law of the slow elementary step. Why wouldn't you use one the approximations?

Sahil Jog 1F
Posts: 126
Joined: Thu Jul 11, 2019 12:16 am

Re: Using Steady State Approx/Pre-Equilibrium Approx

Postby Sahil Jog 1F » Fri Mar 13, 2020 8:45 am

The pre equilibrium approach basically accounts for the rate-limiting reaction to be the rate law for the overall reaction. Furthermore, Dr. Lavelle says not to worry about the steady state approach, since it would not be covered on the syllabus.

Cooper Baddley 1F
Posts: 100
Joined: Wed Sep 18, 2019 12:19 am

Re: Using Steady State Approx/Pre-Equilibrium Approx

Postby Cooper Baddley 1F » Fri Mar 13, 2020 9:01 am

You don't need to know steady state for this class


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