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Reversible vs Irreversible

Posted: Sat Jan 20, 2018 10:58 pm
by Janice Xiao 1I
What's the difference between reversible work and irreversible work?

Re: Reversible vs Irreversible

Posted: Sat Jan 20, 2018 11:29 pm
by Julia Cheng 2J
Reversible work is done very slowly and requires the maximum amount of energy.

Re: Reversible vs Irreversible

Posted: Sun Jan 21, 2018 6:36 pm
by Aijun Zhang 1D
Reversible process: can change the reaction by changing a variable in subtle amount. The variable is usually pressure.
Also the reversible work is always greater than irreversible work.

Re: Reversible vs Irreversible

Posted: Sun Jan 21, 2018 7:46 pm
by Bansi Amin 1D
Why is reversible work done so slowly?

Re: Reversible vs Irreversible

Posted: Sun Jan 21, 2018 8:13 pm
by Marina Georgies 1C
I may be wrong but I believe you are referring to irreversible vs reversible processes. A reversible process can be reversed by infinitely small changes in a variable (such as volume), and these infinitesimal changes are so tiny that they result in the maximum amount of work done. In the end, though, the direction of the reaction is able to be reversed.
For an irreversible process, the direction of the reaction cannot be changed by small changes in a variable.
A good example in the book is given on page 265 with the moving piston.

I hope this helps.