## HW problem 4A.5

Gisela F Ramirez 2H
Posts: 61
Joined: Fri Sep 28, 2018 12:27 am

### HW problem 4A.5

A piston confines 0.200mol Ne(g) in 1.20L at 25 degrees Celsius. Two experiments are performed:
a.) The gas is allowed to expand through an additional 1.20L against a constant pressure of 1.00 atm

b.) The gas is allowed to expand reversibly and isothermally to the same final volume

which process does more work?
I was wondering, can someone explain to me what process b is? I do not completely understand what's happening when they say it expands reversibly and isothermally??

Shally Li 2C
Posts: 30
Joined: Fri Sep 28, 2018 12:22 am

### Re: HW problem 4A.5

A reversible process occurs when a system is at equilibrium (P internal = P external). It can be reversed by an infinitely small change in a variable. For example, if the pressure inside a cylinder is about equal to the pressure outside of it, the piston can move in either direction if there is a small change in pressure.

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