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Reversible and Irreversible Expansion

Posted: Mon Jan 27, 2020 4:20 pm
by Jada Brown 2H
What are reversible and irreversible expansion? What do they mean?

Re: Reversible and Irreversible Expansion

Posted: Mon Jan 27, 2020 5:00 pm
by Brian_Ho_2B
Reversible expansions allow the gas to return to its original volume naturally on its own. Irreversible expansions change to a certain volume and stay there. There are different equations for the work done by expansion for each of those cases. For reversible expansions, w = -nRT*ln(V2/V1) and for irreversible expansions against an external pressure, w = -P(exterior)* change in Volume.

Re: Reversible and Irreversible Expansion

Posted: Mon Jan 27, 2020 9:46 pm
by Harry Zhang 1B
Reversible expansion means when the expansion can be reversed by an infinitesimal change, while irreversible means when an infinitesimal change will not reverse the direction of expansion.