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.

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Answer 1

The standard potential for the given galvanic cell at 25°C can be calculated using the standard reduction potentials. The standard potential for the given galvanic cell at 25°C is 0.40 V.

Step-by-step explanation:

The standard potential for the given galvanic cell at 25°C can be calculated using the standard reduction potentials. The half-reactions that occur in each half-cell are:

Ti³+ + 3e- → Ti²+ (E° = -0.37 V)

Fe³+ + 3e- → Fe²+ (E° = -0.77 V)

To calculate the standard potential for the cell, we subtract the reduction potential of the anode (Fe/Fe²+) from the reduction potential of the cathode (Ti³+/Ti²+):

E°cell = E°cathode - E°anode

E°cell = (-0.37 V) - (-0.77 V)

E°cell = 0.40 V