Question

How is there an increse of temperature when a gas expnads freely?

Answer 1

Due to pressure the gas expands and gives heat

Answer 2

Hey friend ✌
Here is u r Ans ⤵️⤵️⤵️


❄The internal energy of a real gas depends on both temperatureand pressure.
So, if U remains constant and pressure changes, the temperature must change.

❄In the idealgas limit of very low pressures, thepressure dependence of real gasesweakens and approaches zero.

❄The enclosure is insulated so there is no heat exchange.
The first law tells us therefore that the internal energy is constant ( ). For

an ideal gas, the internal energy is a function of temperature only so that the temperature of the gas before the free expansion and after the expansion has been completed is the same.


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