Timeline for Difference between spontaneous and irreversible process?
Current License: CC BY-SA 4.0
4 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Apr 29, 2023 at 0:08 | history | edited | Themis | CC BY-SA 4.0 |
deleted 13 characters in body
|
| Apr 28, 2023 at 11:44 | comment | added | Themis | Start with $\Delta S_\text{univ} = \Delta S + \Delta S_\text{bath} = \Delta S - Q/T$ and use the first law to write $Q = \Delta U$ since $V$ is constant. | |
| Apr 28, 2023 at 11:24 | comment | added | John Davies | Thank you. From your second paragraph, I assume you mean this equation $\Delta F=-T\Delta S_{univ}$. It implies $\Delta F\le0$ but I do not understand why it is true. I thought Helmholtz free energy is a state function. The value of $\Delta F$ should not depend on whether a path between two states is reversible or not? | |
| Apr 28, 2023 at 11:09 | history | answered | Themis | CC BY-SA 4.0 |