# Differences

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 phy141kk:lectures:34-18 [2018/11/29 17:54]kkumar [Molar Specific Heat for Gases] phy141kk:lectures:34-18 [2018/11/29 17:58]kkumar [Quasistatic adiabatic expansion of a Gas] Both sides previous revision Previous revision 2018/11/29 17:58 kkumar [Quasistatic adiabatic expansion of a Gas] 2018/11/29 17:54 kkumar [Molar Specific Heat for Gases] 2018/11/29 17:51 kkumar [Free expansion] 2018/11/29 17:47 kkumar [Adiabatic Process] 2018/11/25 10:51 kkumar created 2018/11/29 17:58 kkumar [Quasistatic adiabatic expansion of a Gas] 2018/11/29 17:54 kkumar [Molar Specific Heat for Gases] 2018/11/29 17:51 kkumar [Free expansion] 2018/11/29 17:47 kkumar [Adiabatic Process] 2018/11/25 10:51 kkumar created Line 187: Line 187: ===== Quasistatic adiabatic expansion of a Gas ===== ===== Quasistatic adiabatic expansion of a Gas ===== - The adiabatic expansion I demonstrated was far from quasistatic! ​However if we consider a quasistatic adiabatic expansion we can derive a useful relationship between pressure and volume in terms of the molar heat capacities we just considered. As $dQ=0$ + /* + The adiabatic expansion I demonstrated was far from quasistatic! ​ + + */ + + If we consider a quasistatic adiabatic expansion we can derive a useful relationship between pressure and volume in terms of the molar heat capacities we just considered. As $dQ=0$ $dE_{int}=dQ-dW=-dW=-PdV$ $dE_{int}=dQ-dW=-dW=-PdV$