In which of the following changes is the work done by the system the largest at 25°C?
A) an isothermal reversible expansion of an ideal gas from 1 L to 10 L
B) an isothermal expansion of an ideal gas from 1 L to 10 L against an opposing pressure of 5 atm
C) an isothermal free expansion of an ideal gas from 1 L to 10 L
D) an isothermal expansion of an ideal gas from 1 L to 10 L against an opposing pressure of 1 atm
E) The work is the same for all these processes.
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