50 likes | 131 Views
Understand the concept of zero energy change in ideal gas as it expands against vacuum, with a focus on the first law of thermodynamics and its implications. Explore the relationship between volume, temperature, and internal energy.
E N D
v v
The change of energy of an ideal gas with volume at constant temperature is equal to zero.AS GAS EXPANDS AGAINST VACCUM, THEREFORE ,POPPOSING=0HENCE DW=-POPPOSINGDV=0USINF FIRST LAW OF THERMODYNAMICSDU=đQ(∂u⁄∂v)t=0DU=(∂U⁄∂T)V+(∂U/∂V)TDVBUT DU=0 AND DT=0 HENCE (∂u⁄∂v)tDV=0AS DV≠0 IMPLIES THAT