Answer to Question #71749 in General Chemistry for whitney

Question

Calculate the potential for each cell as shown below and indicate whether the metal electrode in the half-reaction opposite the standard hydrogen electrode, S.H.E., would be the anode or the cathode if the cell was shorted and electrons were allowed to flow freely at 25 °C.

A) S.H.E. || Zn2 (aq, 0.0520 M) | Zn(s)

E°Zn2+/Zn= -0.762 V

E Cell= ? V


The Zn electrode is:
a. anode
b. cathode

B) Pt(s) | V3 (aq, 0.355 M), V2 (aq, 0.00700 M) || S.H.E.

E°V3+/V2+ = 0.255 V

Ecell= ? V

The Pt electrode is:
a. anode
b. cathode