Suppose that the volume of a certain ideal gas is to be doubled by one of the following processes: (1) isothermal expansion, (2) adiabatic expansion, (3) free expansion, or (4) expansion at constant p

Question

Suppose that the volume of a certain ideal gas is to be doubled by one of the following processes: (1) isothermal expansion, (2) adiabatic expansion, (3) free expansion, or (4) expansion at constant pressure.

If $E_{1}$ , $E_{2}$ , $E_{3}$ and $E_{4}$ respectively are the changes in average kinetic energy of the molecules for the above four processes, then

TestHub · Accepted Answer

Average kinetic energy tracks temperature. Isothermal: E 1 ​ = 0 ; adiabatic expansion: E 2 ​ < 0 ; free expansion: E 3 ​ = 0 ; isobaric expansion: E 4 ​ > 0 . Hence E 1 ​ = E 3 ​ and E 4 ​ > E 3 ​ .

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