Temperature effect on Entropy

Moderators: Chem_Mod, Chem_Admin

Alicia Lin 2F
Posts: 83
Joined: Wed Sep 18, 2019 12:17 am

Temperature effect on Entropy

Postby Alicia Lin 2F » Wed Feb 05, 2020 6:38 pm

Using the equation , entropy would decrease as temperature increases. Why is this? Wouldn't you expect entropy to increase as temperature increases because the molecules are in a more disorderly state as temperature increases?

IScarvie 1E
Posts: 66
Joined: Sat Aug 17, 2019 12:16 am

Re: Temperature effect on Entropy

Postby IScarvie 1E » Wed Feb 05, 2020 7:22 pm

This confused me too, but the thing to remember is that the equation is solving for the change in entropy, not entropy itself, and the temperature in the equation is a constant, not change in temperature. If a system is already at high temperature and the molecules are excited, it's change is entropy will not be as dramatic as it would be if it were at a lower temperature. Hope this helps!

Return to “Concepts & Calculations Using Second Law of Thermodynamics”

Who is online

Users browsing this forum: No registered users and 1 guest