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The Nernst Equation

#### Q. What is the calculated value of the cell potential at 298K for an electrochemical cell with the following reaction, when the F2 pressure is 1.26 atm, the F^- concentration is 7.88 x 10^-3 M, and the Ag^+ concentration is 6.24 x 10^-4 M? F2(g) + 2Ag(s) → 2.00F^-(aq) + 2Ag^+(aq) The cell reaction as written above is spontaneous for the concentrations given:

Solved • Apr 1, 2020

The Nernst Equation

#### Q. What is the calculated value of the cell potential at 298K for an electrochemical cell with the following reaction, when the H2 pressure is 2.46x10^-3 atm, the H^+ concentrations is 1.32M, and the Pb^2+ concentrations is 2.43x10^-4M? 2H^+(aq) + Pb(s) → H2(g) + Pb^2+(aq) Answer: ____ V The cell reaction as written above is spontaneous for the concentrations given: ____

Solved • Apr 1, 2020

The Nernst Equation

#### Q. What is the calculated value of the cell potential at 298K for an electrochemical cell with the following reaction, when the F2 pressure is 8.65x10^-4 atm, the F^- concentrations is 1.30M, and the Ni^2+ concentrations is 1.50M? F2(g) + Ni(s) → 2F^-(aq) + Ni^2+(aq) Answer: ____ V The cell reaction as written above is spontaneous for the concentrations given: ____

Solved • Apr 1, 2020

The Nernst Equation

#### Q. What is the cell potential for the reaction Mg(s) + Fe^2+(aq) → Mg^2+(aq) + Fe(s) at 69 °C when [Fe^2+] = 3.40 M and [Mg^2+] = 0.110 M. Express your answer to three significant figures and include the appropriate units.

Solved • Mar 7, 2020

The Nernst Equation

#### Q. Consider the reaction Mg(s) + Fe^2+ (aq) → Mg^2+(aq) + Fe(s) at 69 °C, where [Fe^2+] = 3.40 M and [Mg^2+] = 0.110 M. What is the value for n? Express your answer as an integer and include the appropriate units (i.e. enter mol for moles).

Solved • Mar 7, 2020

The Nernst Equation

#### Q. For the reaction 2Co^3+(aq) + 2Cl^-(aq) → 2Co^2+(aq) + Cl2(g). E° = 0.483 V what is the cell potential at 25 °C if the concentrations are [Co^3+] = 0.515 M, [Co^2+] = 0.325 M, and [Cl^-] = 0.301 M, and the pressure of Cl2 is PCl2 = 3.90 atm? Express your answer with the appropriate units.

Solved • Mar 7, 2020

The Nernst Equation

#### Q. What pH is needed to produce this value of Q if the concentration and pressure values are • [Br2] = 3.50 x 10^-4 M, •[Br^-] = 11.95 M, • [SO4^2-] = 9.65 M, and • PSO2 = 3.50 x 10^-5 atm? Express your answer numerically to two decimal places.

Solved • Mar 7, 2020