## relationship between entropy and enthalpy

Volume: $\Delta S = nR\ln \frac{V_{2}}{V_{1}}$
Temperature: $\Delta S = nC\ln \frac{T_{2}}{T_{1}}$

Kaylee Clarke 1G
Posts: 103
Joined: Fri Aug 30, 2019 12:15 am

### relationship between entropy and enthalpy

how ∆S is related to ∆H for a change at constant temperature and pressure?

jisulee1C
Posts: 149
Joined: Thu Jul 25, 2019 12:17 am

### Re: relationship between entropy and enthalpy

at constant temperature and pressure, the two are related through this equation: ∆S=∆H/T (from ∆G = ∆H - T∆S, when ∆G = 0)
Attachments
itc-equations-gibbs.png (18.95 KiB) Viewed 74 times

Diana A 2L
Posts: 106
Joined: Sat Aug 17, 2019 12:16 am
Been upvoted: 1 time

### Re: relationship between entropy and enthalpy

There isn’t a DIRECT relationship between entropy and enthalpy, BUT Gibbs free energy provides a relationship between both terms in the equation: delta G = delta H — T(delta S). For a system where delta G= 0, then delta S= delta H/ T , in which case there is a direct relationship.

Return to “Entropy Changes Due to Changes in Volume and Temperature”

### Who is online

Users browsing this forum: No registered users and 1 guest