@X@user.full_name@X@ @GMU: The initial concentration of PCl5 was 0.1655 M. It was allowed to decompose at some temperature until equilibrium had been attained (see reaction below). What must be the equilibrium concentration of PCl3?PCl5(g) → PCl3(g) + Cl2(g) Kc = 0.0580

@X@user.full_name@X@ @GMU: ACS-Which of the following is the weakest oxidizing agent? Fe3+ + 3e- → Fe E° = -0.040 Ag1+ + 1e- → Ag E° = 0.800 Cu2+ + 2e- → Cu E° = 0.340 Al3+ + 3e- → Al E° = -1.660

@X@user.full_name@X@ @GMU: ACS-It took 600.2 s for 67.16% of a substance to react according to first-order kinetics. What is the value of the rate constant?

@X@user.full_name@X@ @GMU: ACS-What is the free energy change for the reaction below? 2VO2+(aq) + 4H+(aq) + Ni(s) → 2VO2+(aq) + 2H2O(l) + Ni(s) E° = 1.230V

@X@user.full_name@X@ @GMU: ACS-Which of the following conditions will cause equilibrium to shift to the right?FeO(s) + CO(g) ⇋ Fe(s) + CO2(g)

@X@user.full_name@X@ @GMU: The initial concentration of PCl5 was 0.1172 M. It was allowed to decompose at some temperature until equilibrium had been attained (see reaction below). What must be the equilibrium concentration of PCl3?PCl5(g) → PCl3(g) + Cl2(g) Kc = 0.0580

@X@user.full_name@X@ @GMU: ACS-Consider the reaction.4NH3(g) + 5O2(g) ⇋4NO(g) + 6H2O(l)What is the correct expression for Kc?

@X@user.full_name@X@ @GMU: One mole of N2O4 gas was compressed from 38.813 L to 21.513 L. What was the ΔS of the process?

@X@user.full_name@X@ @GMU: What is the coefficient, b, in the reaction below, if Kc = 4.33e-6 and Kp = 1.79e-4 at 230.41°C?4A(s) + bB(g) → 4C(g)

@X@user.full_name@X@ @GMU: What is the wavelength of a line in the Balmer series of the hydrogen spectrum, if the transition occurs from ni = 3 to nf = 2? Remember the Rydberg constant is 1.097×10-2 nm-1