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197 solutions

Cell Potential

Q. How would the magnitude and sign of the voltage change if the electrodes in the two half-cells were swapped?

Solved • Apr 4, 2020

Cell Potential

Q. A voltaic cell is constructed from a standard Cu^2+|Cu half cell (E°red = 0.337 V) and a standard Cl2|Cl^- half cell (E°red = 1.360 V). The anode reaction is: The cathode reaction is: The spontaneous cell reaction is: The cell voltage is ____ V.

Solved • Apr 1, 2020

Cell Potential

Q. Consider the following reaction at 298K. 2H^+(aq) + Hg(l) → H2(g) + Hg^2+(aq) Which of the following statements are correct? Choose all that apply. a) E°cell < 0 b) ΔG° < 0 c) K < 1 d) n = 2 mol electrons e) The reaction is product-favored.

Solved • Apr 1, 2020

Cell Potential

Q. Consider the following reaction at 298K. 2 H^+ (aq) + Sn (s) → H2(g) + Sn^2+ (aq) Which of the following statements are correct? Choose all that apply. a) K < 1 b) n = 4 mol electrons c) The reaction is product-favored d) delta G ° < 0 e) E° cell < 0

Solved • Apr 1, 2020

Cell Potential

Q. Calculate the standard cell potential ( E°) for the reaction X(s) + Y^+ (aq) → X^+ (aq) + Y(s) if K = 7.66x10^-3 Express your answer to three significant figures and include the appropriate units.

Solved • Mar 7, 2020

Cell Potential

Q. Tarnish on copper is the compound CuO. A tarnished copper plate is placed in an aluminum pan of boiling water. When enough salt is added so that the solution conducts electricity, the tarnish disappears. Imagine that the two halves of this redox reaction were separated and connected with a wire a salt bridge. Calculate the standard cell potential given the following standard reduction potentials: Al^3+ + 3e^- → Al; E° = -1.66 V Cu^2+ + 2e^- → Cu; E° = 0.340 V Express your answer to two decimal places and include the appropriate units.

Solved • Mar 7, 2020

Cell Potential

Q. Use the standard reduction potentials located in the 'tables' linked above to calculate the equilibrium constant for the reaction: Cd^2+(aq) + 2Fe^2+(aq) → Cd(s) + 2Fe^3+(aq) Hint: Carry at least 5 significant figures during intermediate calculations to avoid round off error when taking the antilogarithm. you may use the OWL references to find the values you may need in this question. Equilibrium constant: ____ ΔG° for this reaction would be ____ than zero.

Solved • Apr 1, 2020