Show that for nonstandard conditions the temperature variation of a cell potential is where E(T 1 )

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

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

where E(T1) and E(T2) are the cell potentials at Tand 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, ΔrH°, and ΔrS° for the reaction, and calculate K for the two temperatures.

Cu(s) Cu+ (aq) |Fe+ (aq), Fe+ (aq) |Pt(s)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.

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General Chemistry Principles And Modern Applications

ISBN: 9780132931281

11th Edition

Authors: Ralph Petrucci, Jeffry Madura, F. Herring, Carey Bissonnette

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