How to identify Thermodynamic

[jordanginyard_]

How can you tell if a problem is dealing with either isothermal, reversible, or irreversible?

[Jeffrey Hablewitz 2I]

Reversible reactions are almost always isothermal and systems that expand without increasing T are normally the product of a reversible process. Systems that change volume as the result of temperature change are generally irreversible. Also, if the problem states that the pressure of the system is different than the external pressure, the expansion will be irreversible. Hope this helps!

[Sedge Greenlee]

Isothermal = no change in temperature
irreversible = spontaneous reaction as a result of large differences in pressure
reversible = extremely slow reaction which is isothermic, changing relative pressure infinitely slow

[Vince Li 2A]

You can only have an isothermic system that is reversible, I believe. That would make sense, because in an irreversible reaction, the system is unable to maintain a constant temperature, due to the sudden change in internal energy of the system. Remember how because a reversible takes a long period of time, the system is able to replenish the energy lost from work of expansion from the heat gained from the surroundings.
Overall, an isothermic system is part of a reversible reaction, while an irreversible system is its own thing.

[Susanna Givan 2B]

Reversible reactions can usually expand without changing the value of T. Irreversible reactions typically expand while changing the value of T.

[Susanna Givan 2B]

Oh--reversible reactions can't go to completion entirely if they are in a closed container. Irreversible reactions would go to completion entirely if it was in a closed container.