## Elementary Steps

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

Jina Kwon
Posts: 100
Joined: Fri Aug 09, 2019 12:15 am

### Elementary Steps

Why is it unlikely that 4 molecules collide simultaneously?

Julie Park 1G
Posts: 100
Joined: Thu Jul 25, 2019 12:15 am

### Re: Elementary Steps

I believe professor Lavelle provided an example along the lines of something like this:

Imagine there are two students sitting across from each other with the goal to throw their crumpled piece of paper and have them collide mid-air. The likelihood of success is not that low! It's certainly possible that they will crash into each other!

Now imagine there are three students involved... The chance that all three will collide at the same time in the same place is much less...

Now imagine if there were four students... It'll be very difficult -- so the probability of success is even lower!

This is why it's very unlikely that 4 molecules will collide simultaneously.

Posts: 102
Joined: Tue Oct 02, 2018 12:16 am

### Re: Elementary Steps

It is about probability. The probability that a specific set of four molecules not only collide at the exact same time, but with enough energy to break and form new bonds. Through a probability lens, these occurrences are unlikely.

ramiro_romero
Posts: 90
Joined: Sat Sep 07, 2019 12:16 am

### Re: Elementary Steps

I think about individual particles travelling in a jar. The chances of 4 particles simultanesouly colliding with each other is far less likely than if 2 particles were to collide with each other.

805097738
Posts: 180
Joined: Wed Sep 18, 2019 12:20 am

### Re: Elementary Steps

what even are elementary steps