Calculate the standard potential for this cell at 25°C

Question

A galvanic (voltaic) cell consists of an inert platinum electrode in a solution containing 1.0 M titanium(III) ion and 1.0 M titanium(II) ion, and another inert platinum electrode in a solution containing 1.0 M iron(III) ion and 1.0 M iron(II) ion, connected by a salt bridge. Calculate the standard potential for this cell at 25°C. Standard reduction potentials can be found in the standard reduction potentials table.

Answer 1

From the table of standard reduction potentials, we find...

Ti³⁺ ==> Ti²⁺ .. Eº = -0.85 V (anode)

Fe³⁺ ==> Fe²⁺ .. Eº = +0.771 (Cathode)

The Eº_cell = cathode - anode = 0.771 - (-0.85)

Eº_cell = 1.62 V