Reduction potential of chlorine electrode will be highest at 298K and 1 bar pressure of Chlorine when Platinum electrode is immersed in

detailed solution

Correct option is C

The reduction reaction involved is: Cl2+2e-1→2Cl-1; QR=[Cl-1]2PCl2 Nernst equation for the electrode potential is E=E0-2.303RTnFlog10QR=E0-0.05912log10[Cl-1]PCl2 Lower the concentration of [Cl-1], greater will be the electrode potential.In general, reduction potential of non-metal electrode increases with decrease in the concentration of electrolyte. Hence, reduction potential of chlorine electrode is highest when inert Pt electrode is immersed in 0.001M HCl.