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Question

Write the cell notation for an electrochemical cell consisting of an anode where H₂(g) is oxidized to H⁺(aq) at a platinum electrode and a cathode where Fe³⁺(aq) is reduced to Fe²⁺(aq) at a platinum electrode. Assume all aqueous solutions have a concentration of 1 mol/L and gases have a pressure of 1 bar.

Answer 1

Convention tell us to write the anode on the left and the cathode on the right.

Pt | H₂(g, 1 bar),H⁺(aq,1M) || Fe²⁺(aq, 1M), Fe³⁺(aq, 1 M) | Pt