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Question
Two cylinders A and B of equal capacity are connected to each other via a stopcock. A contains a gas at standard temperature and pressure. B is completely evacuated. The entire system is thermally insulated. The stopcock is suddenly opened. Answer the following:
What is the change in the temperature of the gas?
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Solution 1
Zero. Since no work is being done by the gas during the expansion of the gas, the temperature of the gas will not change at all.
Solution 2
The system being thermally insulated, there is no change in temperature (because of free expansion).
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