CHEGG Consider the following reaction: LaTeX: Fe/left (CN/right) _6^{3-}+e^-/longrightarrow Fe/left (CN/right) _6^{4-}F e (C N) 6 3 - + e - ⟶ F e (C N) 6 4 - From the cyclic voltammetry data, a cathodic peak potential (Epa) of 0.271 V and an anodic peak potential (Epc) of 0.330 V was obtained. Is the reaction reversible?

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Chemistry

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5 June, 00:38

CHEGG Consider the following reaction: LaTeX: Fe/left (CN/right) _6^{3-}+e^-/longrightarrow Fe/left (CN/right) _6^{4-}F e (C N) 6 3 - + e - ⟶ F e (C N) 6 4 - From the cyclic voltammetry data, a cathodic peak potential (Epa) of 0.271 V and an anodic peak potential (Epc) of 0.330 V was obtained. Is the reaction reversible?

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Paulina Stafford · Answer 1

E° = E°cathode - E° anode = 0.271-0.330 = - 0.59V

Explanation:

NB: the stoichiometry does not affect E°values,

And the more positive the E° values, the greater it's tendency to become spontaneous and hence irreversible, and the more negative the E° values the more likely to become less spontaneous and reversible, hence the above reaction is reversible