{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

3615SU03QS05

# 3615SU03QS05 - in terms of U T and S derive the expression...

This preview shows page 1. Sign up to view the full content.

Quiz # 5 CHEM 3615 06/18/03 Name: ___________________ ID#: _____________________ Question 1: (2 points) Write down the differential equation describing the change in Internal energy dU with change in volume and change in entropy: dU = dw + dq = - PdV + TdS Question 2: (2 points) Write down the differential equation describing the change in Gibbs Free energy dG with change in pressure and change in temperature: G = H – TS and H = U + PV. Therefore G = U + PV - TS dG = dU + PdV + VdP –TdS – SdT = VdP - SdT Question 3: (2 points). Using the first law of thermodynamics for the case of reversible work and reversible heat exchange and the definition of the Helmholtz Free Energy A,
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: in terms of U, T and S, derive the expression for dA in terms of changes in state variables, V and T: A = U – TS Thus, dA = dU – TdS – SdT = -PdV + TdS – TdS – SdT dA = - PdV – SdT Question 4: (2 points). What is the Maxwell relationship expressing the change in entropy with pressure at constant temperature? P T T V P S ∂ ∂ = ∂ ∂ Question 5: (2 points). Write down the Gibbs-Helmholtz equation which is used to describe the temperature dependence of G/T. 2 T H T T G P − = ∂ ∂...
View Full Document

{[ snackBarMessage ]}