## Free Expansion

$\Delta S = \frac{q_{rev}}{T}$

Jonathan Christie 1I
Posts: 32
Joined: Mon Apr 09, 2018 1:38 pm

### Free Expansion

How do we know if a reaction is undergoing free expansion?

arif_latif_2G
Posts: 60
Joined: Fri Sep 28, 2018 12:23 am

### Re: Free Expansion

When work done by the system is negative.

Sara Lakamsani 4D
Posts: 61
Joined: Fri Sep 28, 2018 12:29 am

### Re: Free Expansion

This means that no energy was put into the system to initiate expansion

Ariel Cheng 2I
Posts: 67
Joined: Fri Sep 28, 2018 12:29 am

### Re: Free Expansion

When a system expands, it is doing work on the surroundings which means it would be losing energy. Therefore, work is negative. If the surroundings were to do work on the system, then work would be positive because the system is gaining energy.