Review Midterm1

# Review Midterm1 - E = q w w = Pext V(irrev H = E PV H =...

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Ω= A ! a i ! i S = kln k = R/N a = 1.38 x 10 -23 J/K S±= ±kln( final ) - kln( initial ) = Nk ln( final / initial ) for N molec. =Nkln(V final /V initial ) w total =− PdV V 1 V 2 nRT V dV V 1 V 2 nRT (ln( V )) | V 1 V 2 nRT ln V 2 V 1 V = 0 P = 0 S = dq rev T initial final = nR ln V final V initial S = dq rev T initial final = nC v ln T final T initial S = dq rev T initial final = nC p ln T final T initial dq rev = nRT dV V dq rev = nC v dT dq rev = nC P dT S = dq rev T initial final = q rev T T = 0 E = q + w w = - P ext V (irrev.) H = E + PV H = E + ∆( PV) = E + P V (P is constant) = q p E = nC v T=q V H = nC p P C v = 3/2R C p =C v + R = 5/2 R If T = 0, then E = 0 and q = -w State Function Hess Law (extensive property) Standard State rxn = Σ∆ f (products) - Σ∆ f (reactants)

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The Second Law S universe = S system + s surroundings The Third Law Entropy and Phase Changes: S univ = 0 sys = ∆Η sys /T S surr =− H sys T S reaction o = S prod . o S react . o G =
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Review Midterm1 - E = q w w = Pext V(irrev H = E PV H =...

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