Show that for nonstandard conditions the temperature variation of a cell potential is

where E(T₁) and E(T₂) are the cell potentials at T₁ and T₂ respectively. We have assumed that the value of Q is maintained at a constant value. For the nonstandard cell below, the potential drops from 0.394 V at 50.0 °C to 0.370 V at 25.0 °C Calculate Q, Δ_rH°, and Δ_rS° for the reaction, and calculate K for the two temperatures.

Choose concentrations of the species involved in the cell reaction that give the value of Q that you have calculated, and then determine the equilibrium concentrations of the species at 50.0 °C.

Transcribed Image Text:

(A.So R In Q) zF E(T₁) E(T₂) = (T₁-T₂)-