Irreversible vs. Reversible Expansion

[Mahir_Hasan2C]

How are we able to tell if an expansion is irreversible or not?

[aisteles1G]

In most of the homework problems it seems to tell you if the reaction is reversible or not so I don't think you have to know if it is or not, I think the important thing to know concerning reversible reactions is that they use a different equation to calculate work and also that reversible reactions always do more work. Hope this helps!

[Saachi_Kotia_4E]

I think it depends on the surroundings of the reaction, for example certain containers allow it to be reversible, while others restrict it. I may be wrong, but this is what I understood from the homework problems. regardless, the homework seems to tell you whether or not its reversible, so I dont think we need to worry about determining it ourselves.