Reversible and Irreversible Expansion

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Jada Brown 2H
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Joined: Sat Aug 17, 2019 12:15 am

Reversible and Irreversible Expansion

Postby Jada Brown 2H » Mon Jan 27, 2020 4:20 pm

What are reversible and irreversible expansion? What do they mean?

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Re: Reversible and Irreversible Expansion

Postby Brian_Ho_2B » Mon Jan 27, 2020 5:00 pm

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.

Harry Zhang 1B
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Joined: Sat Sep 14, 2019 12:16 am

Re: Reversible and Irreversible Expansion

Postby Harry Zhang 1B » Mon Jan 27, 2020 9:46 pm

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.

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