Timeline for What is work done to make a system state?
Current License: CC BY-SA 4.0
10 events
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| Dec 9, 2020 at 12:45 | comment | added | John Darby | I do not follow your edit. Regarding p and V, it can be calculated using the external pressure, or for a reversible process or a slow process using the internal pressure. See physics.stackexchange.com/questions/243614/… on this exchange. | |
| Dec 9, 2020 at 6:28 | comment | added | nice life to exist-questioner | Any mistake in my edit? | |
| Dec 9, 2020 at 5:07 | comment | added | nice life to exist-questioner | Just one thing here d(PV) is being pressure external did? | |
| Dec 8, 2020 at 16:56 | history | edited | John Darby | CC BY-SA 4.0 |
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| Dec 8, 2020 at 16:44 | comment | added | John Darby | Internal energy is always the energy of the mass within an open or closed system, for the open system enthalpy in /out affects the internal energy. I will update my earlier answer to clarify this for a closed system. | |
| Dec 8, 2020 at 16:38 | comment | added | John Darby | For a reversible process the work of expansion is $\int_{}^{}p \enspace dV$,.See other questions on this exchange regarding reversible/irrerversible work, e.g., physics.stackexchange.com/questions/451176/… | |
| Dec 8, 2020 at 16:36 | comment | added | Brian | Could you explain why we use enthalpy rather than internal energy in open systems? Both are measuring energy total only , right? Or does internal energy not actually measure the 'full energy' in an open system, as in you gotta add PV to get the full picture? | |
| Dec 8, 2020 at 16:35 | comment | added | nice life to exist-questioner | Ok So d(PV) is being mass exchange work and PdV forms work due to heat supplied! | |
| Dec 8, 2020 at 16:29 | history | edited | John Darby | CC BY-SA 4.0 |
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| Dec 8, 2020 at 16:22 | history | answered | John Darby | CC BY-SA 4.0 |