For the galvanic cell Pt(s) ∣ Sn2+(aq) ,Sn4+(aq) ∣∣ Cd2+(aq) ∣ Cd(s) ,what is the function of the Pt(s) ?
A) Pt is the anode and is a reactant in the overall cell reaction.
B) Pt is the anode and does not appear in the overall cell reaction.
C) Pt is the cathode and is a product in the overall cell reaction.
D) Pt is the cathode and does not appear in the overall cell reaction.
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