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47 solutions

Cell Potential

Q. A cell that consists of an Ni, NiSO4(aq) half-cell, Al, AlCl3(aq), half-cell, and a salt bridge. For a Ni2+(aq) + 2e- → NI aat 25oC, Eo = -0.28 V. FOr Al3+(aq) +3e- → Al at 25oC, Eo = -1.66 V.

Solved • Aug 18, 2019

Cell Potential

Q. Consider a cell that contains Ag, AgNO3 (aq) half cell, a Mn, MnSO4(aq) half cell and a salt bridge. For Ag+(aq) + 2 e- → Ag(s) E° = 0.80 V For Mn2+(aq) + 2 e- → Mn(s) E° = -1.18 V (a) write the spntaneous net ionic cell reation. (b) find Eo for this cell at 25 C (c)find dGo for the cell reaction

Solved • Aug 18, 2019

Cell Potential

Q. Consider a cell that consists of an Ag, AgNO3(aq) half-cell, a Mn, MnSO4(aq) half-cell, and a salt bridge. For Ag+ + e- --> Ag at 25 oC, Eo = 0.80 V For Mn2+(aq) + 2e- --> Mn(s) at 25 oC, Eo = -1.18 V. (a) Write the spontaneous net ionic cell reaction. (b) Find Eo for this cell at 25 oC. (c) Find dGo for the cell reaction.

Solved • Aug 18, 2019

Cell Potential

Q. A galvanic cell consists of an Z, ZnSO4(aq) half-cell, and Al, AlCl3(aq) half cell, and a salt bridge. For Zn2+(aq) + 2e- --> Zn(s) at 25C, Eo = -0.76V. For Al3+(aq) + 3e- --> Al(s) at 25C, Eo = -1.66 V.

Solved • Aug 9, 2019

Cell Potential

Q. Based on the following E0 values, find ΔG delta and K for the spontaneous cell reaction. E0(Ni2+/Ni) = -0.28 V E0(Al3+/Al) = -1.66 V Ni 2+ (aq) + 2e ---> Ni(s) Al 3+ (aq) + 3e ---> Al(s)

Solved • Aug 8, 2019

Cell Potential

Q. Calculate the standard free energy change, ΔGo, and the equilibrium constant, K, for a voltaic cell that operates based on the following reaction (298 K). 4 Ag(s) + O2(g) + 4H+(aq) → 4Ag+(aq) + 2 H2O(l) Standard potentials (reduction): O2(g) + 4 H+(aq) + 4 e- → 2 H2O (l) Eo = +1.23 V Ag+(aq) + e- → Ag(s) Eo = +0.80 V

Solved • Aug 8, 2019

Cell Potential

Q. Which equation is correct? Ecell = Eanode - Ecathode Ecell = Ecathode + Eanode Ecell = Ecathode - Eanode Ecell = Ecathode /Eanode

Solved • Aug 6, 2019