a-certain-voltaic-cell-uses-the-half-reactions-shown-below-anode-zr-s-2-h2o-l-zr

Question

A certain voltaic cell uses the half-reactions shown below:

Anode: Zr(s) + 2 H₂O(l) → ZrO₂(s) + 4 H⁺(aq) + 4 e^–
Cathode: Mn²⁺(aq) + 2 e^– → Mn(s)

Using the thermodynamic values below at 25.0°C, calculate the cell potential (E°) and the equilibrium constant K for the overall cell reaction.

Table of thermodynamic values for Zr, ZrO2, Mn, Mn2+, H2O, and H+ in electrochemistry.

Accepted Answer

E° = 0.390 V
K = 2.32×10²⁶

Answer

E° = 0.390 V
K = 4.33×10²

Answer

E° = 0.780 V
K = 2.32×10²⁶

Answer

E° = 0.780 V
K = 4.33×10²

A certain voltaic cell uses the half-reactions shown below:Anode: Zr(s) + 2 H2O(l) → ZrO2(s) + 4 H+(aq) + 4 e–Cathode: Mn2+(aq) + 2 e– → Mn(s)Using the thermodynamic values below at 25.0°C, calculate the cell potential (E°) and the equilibrium constant K for the overall cell reaction.