A Voltaic Cell Is Constructed with a Pt Wire in an Aqueous

Essay

A voltaic cell is constructed with a Pt wire in an aqueous solution of Br₂/Br ^- (1M) serving as the cathode and a silver wire in a 1M solution of Ag⁺ serving as the anode. The potential of the cell was measured to be +0.287 V. The standard reduction potential for Br₂/Br ^- is 1.087 V.
(I) Write the half-reaction for the reduction taking place in the cell.
(II) Write the half-reaction for the oxidation taking place in the cell.
(III) Write the overall reaction for the oxidation-reduction reaction taking place in the cell.
(IV) Calculate the potential for the Ag/Ag⁺ half-reaction taking place in the cell.
(V) Determine the standard reduction potential, E°, for the half-reaction below.
Ag⁺(aq) + e- ^{$\rightarrow$} Ag(s)