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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