Page 1 of 1

Reversible Expansion

Posted: Wed Jan 30, 2019 8:04 pm
by Bianca Barcelo 4I
What exactly is reversible expansion? Also, how would you calculate the work of a gas that is reversibly expanding?

Re: Reversible Expansion

Posted: Thu Jan 31, 2019 1:04 pm
by Manu Vohra 1L
The equation we use is :
A reversible process is a process whose direction can be "reversed" by inducing infinitesimal changes to some property of the system via its surroundings.

Re: Reversible Expansion

Posted: Fri Feb 01, 2019 12:19 pm
by Lorena Zhang 4E
For example, the volume of the gas inside the container would not be fixed. It would increase/decrease depending on the pressure. We calculate the work of reversible expansion by using integral since the pressure keeps changing. The final equation would be w=-nRTln(V2/V1).

Re: Reversible Expansion

Posted: Fri Feb 01, 2019 12:21 pm
by Maayan Epstein 14B
Something else to note is that this equation is only used when temperature is constant, because all the other q equations involve a delta T, whereas this one is just T by itself.