## Bottle Neck Effect

$K = \frac{k_{forward}}{k_{reverse}}$

Lindsey Chheng 1E
Posts: 110
Joined: Fri Aug 30, 2019 12:16 am

### Bottle Neck Effect

Can someone explain what exactly the bottle neck effect is and how I can remember what it means? I can't picture exactly why the name is "bottle neck".

Ryan Lee 1E
Posts: 50
Joined: Sat Aug 17, 2019 12:16 am

### Re: Bottle Neck Effect

I believe the bottleneck effects describes when in a reaction with multiple steps, there is a slow step that follows a fast step, which means that the second step limits how fast the first one can go (the bottleneck). This is applied to the pre-equilibrium approach we have in which if the first fast step is limited, then we can assume that it is in equilibrium, in which then K = k/k' and we can substitute things around to solve for the rate law more easily.

005162520
Posts: 101
Joined: Tue Sep 24, 2019 12:17 am

### Re: Bottle Neck Effect

Is the second step our first step and the second step or fast step?

ALegala_2I
Posts: 102
Joined: Thu Jul 11, 2019 12:17 am

### Re: Bottle Neck Effect

The first step is fast and the second step is slow.

vibha gurunathan 1h
Posts: 51
Joined: Mon Oct 07, 2019 12:15 am

### Re: Bottle Neck Effect

005162520 wrote:Is the second step our first step and the second step or fast step?

I'm pretty sure it's when the second step is slow, so it limits how fast the first step can go