- #1
thaalescosta
- 11
- 0
Homework Statement
If the Helmholtz Free Energy remains constant, estimate the final pressure of 1.0mol of an ideal gas in the following transformation: (1.0atm, 300k) → (pfinal, 600k). Given Sgas = R.
Homework Equations
A = U - TS
dA = -SdT - pdV
The Attempt at a Solution
If the Helmholtz Free Energy is constant, then ΔA = 0.
So from dA = -SdT - pdV I'd get that S⋅ΔT = -pΔV.
But I don't see how that helps me figuring out the final pressure.