## Reversible isothermal expansion

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

Emma Ward 2C
Posts: 32
Joined: Fri Sep 29, 2017 7:05 am

### Reversible isothermal expansion

Will we need to know how to derive the formula for reversible isothermal expansion for future tests?

Lucian1F
Posts: 87
Joined: Fri Sep 29, 2017 7:07 am
Been upvoted: 1 time

### Re: Reversible isothermal expansion

I highly doubt we will need to show the derivations. Dr. Lavelle just showed us the derivations so we understand where the formulas came from so we wouldn't blindly memorize these formulas without knowing where they came from

Luke Bricca 1H
Posts: 30
Joined: Fri Sep 29, 2017 7:06 am

### Re: Reversible isothermal expansion

It's probably best to understand the reasons behind the derivations we learned in class as the logic used when deriving each equation could be helpful on a conceptual question on a future test or midterm, but I agree with the post above in that I think it's super unlikely we'll need to derive any equation on a future test or midterm.

RussellChin_3A
Posts: 42
Joined: Sat Jul 22, 2017 3:01 am

### Re: Reversible isothermal expansion

I don't think it is necessary to know the derivations (like on past test in 14A we didn't need to know), but it's definitely helpful to know how you derive it because it can help understand the formula better.

Michael Cheng 1C
Posts: 51
Joined: Thu Jul 13, 2017 3:00 am

### Re: Reversible isothermal expansion

So will reversible expansion always be at constant temperature?