Entropy and Reduction in moles of Gas

Moderators: Chem_Mod, Chem_Admin

Nathan Mariano 2G
Posts: 68
Joined: Fri Sep 28, 2018 12:29 am

Entropy and Reduction in moles of Gas

Postby Nathan Mariano 2G » Sun Feb 24, 2019 9:59 pm

Why is standard residual entropy negative or a smaller number than standard molar entropy when the number of moles of gas is reduced?

Bryant Vong 2G
Posts: 32
Joined: Fri Apr 06, 2018 11:05 am

Re: Entropy and Reduction in moles of Gas

Postby Bryant Vong 2G » Sun Feb 24, 2019 11:21 pm

When there are less mols of gas, that means there are less molecules to add to the disorder that contributes to entropy.

KimGiang2F
Posts: 31
Joined: Fri Sep 28, 2018 12:19 am

Re: Entropy and Reduction in moles of Gas

Postby KimGiang2F » Tue Mar 12, 2019 4:23 am

When the number of moles of gas is reduced, the standard residual entropy value is smaller than the standard molar entropy because residual entropy is the measure of how many different arrangements a molecule can have whereas, molar entropy is a measure of a molecule's chaos. With the moles of gas reduced, the disorder of the change in molecular arrangement is more impacted.


Return to “Calculating Standard Reaction Entropies (e.g. , Using Standard Molar Entropies)”

Who is online

Users browsing this forum: No registered users and 2 guests