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categoryالكيمياء schoolبكالوريوس event_available2026-07-14

السؤال

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2. A solution of the chemical compound X in its oxidized form was studied by cyclic voltammetry. The resulting voltammogram is shown below. +20 Current (μA) 0 -20+ +0.9 -> +0.7 +0.5 +0.3 +0.1 Working electrode voltage (vs. reference electrode) The working electrode voltage was initially set to +0.9 V and was slowly decreased to +0.1 V to form the top (cathodic) wave. Then the electrode voltage was swept back to +0.9 V to form the bottom (anodic) wave. The peak of the cathodic wave occurred at +0.478 V, while the peak of the anodic wave occurred at +0.534 V. (A) Calculate the reduction potential of compound X relative to the reference electrode used. [5 points] (B) Calculate the number of electrons transferred in the reduction half-reaction of compound X. [4 points] (C) State whether the reduction of compound X is reversible, and how you know. [2 points]

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