A gas is expanded from volume V 0 to 2 V 0 under three different processes. Process 1 is isobaric, process 2 is isothermal and process 3 is adiabatic (Figure 2.41). Let Δ U 1 , Δ U 2 , Δ U 3

Question

A gas is expanded from volume V 0 ​ to 2 V 0 ​ under three different processes. Process 1 is isobaric, process 2 is isothermal and process 3 is adiabatic (Figure 2.41). Let Δ U 1 ​ , Δ U 2 ​ , Δ U 3 ​ be the change in internal energy of the gas in these processes. Then:

TestHub · Accepted Answer

Isobaric expansion raises T , so Δ U 1 ​ > 0 . Isothermal: Δ U 2 ​ = 0 . Adiabatic expansion cools the gas, so Δ U 3 ​ < 0 . A.

Physics - Heat & Thermo Question with Solution | TestHub

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