Isothermal Irreversible

[Renee Grange 1I]

Is it possible for isothermal reactions to be irreversible, if so, how?

[Ashley Wang 4G]

I suppose if the pressure inside the vessel is different from the external pressure, then there will still exist a definite direction of spontaneous change, which would make the reaction irreversible.

That said, the reaction will somehow have to be kept at constant temperature in order to fulfill your original condition, since it would otherwise cool as the gas expands.

Please correct me if I'm wrong!

[Juliet Stephenson 4E]

I agree! I believe isothermal expansions are irreversible because they progress towards a uniform state, which is an irreversible change.

[Sukanya Mohapatra 2G]

Yes, it is possible for isothermal reactions to be irreversible.