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@X@user.full_name@X@ @GMU: What is the standard free energy change for the following cell?2Cu+(aq) + Ni(s) → 2Cu(s) + Ni2+(aq) Ecoell = 0.780V

@X@user.full_name@X@ @GMU: What is the free energy change for the reaction below, if the reaction quotient, Q, at 25.0oC is equal to 5.81e-5?3C2H2(g) → C6H6(g) ΔGo = -498.180 kJ.

@X@user.full_name@X@ @GMU: The reaction below occurs in an electrochemical cell. Which substance would be the best solid electrode in the given half-cell?3Cu+(aq) + Al(s) → 3Cu(s) + Al3+(aq)

@X@user.full_name@X@ @GMU: What is the vapor pressure of acetic acid, CH3COOH, at 357.3 K if its heat of vaporization and normal boiling point are 23.64 kJ/mol and 391.0 K, respectively?

@X@user.full_name@X@ @GMU: What is the equilibrium concentration of H3O+ in 0.1216 M HF? See reaction belowHF + H2O → F- + H3O+ Ka = 6.600×10-4

@X@user.full_name@X@ @GMU: The half-reaction Fe(s) → Fe3+(aq) + 3e-

@X@user.full_name@X@ @GMU: The osmotic pressure of an unknown solution is 1.479 atm at 27.56 °C. Which of the solutions below is the most likely one? Assume any salt is completely ionic!

@X@user.full_name@X@ @GMU: What is the conjugate base and base dissociation constant of CH3COOH if its acid dissociation constant is 1.760×10-5 ?

John Schreifels @GMU: What is the total entropy change at 25oC for the reaction below, if the standard entropies of reactants and products are So(C(gr)) = 5.74 J/mol*K, So (H2(g)) = 130.68 J/mol*K, and So (C4H10(g)) = 310.1000J/mol*K and the heat of formation of C4H10(g)) is -126.1400 kJ/mol.C4H10(g) → 4C(gr) + 5H2(g)

@X@user.full_name@X@ @GMU: What is the concentration of OH- in 0.1381 M CH3COOH ? See reaction belowCH3COOH + H2O → CH3COO- + H3O+ Ka = 1.760×10-5