Question 16.7: A free expansion Let’s return to one of our examples of an i...
A free expansion
Let’s return to one of our examples of an irreversible process, a thermally insulated box that is divided by a partition into two compartments, each having volume V (Figure 16.12). Initially, one compartment contains n moles of an ideal gas at temperature T, and the other compartment is evacuated. We then break the partition, and the gas expands to fill both compartments. What is the entropy change in this free-expansion process?
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