Does PH Have an Effect on the Cell Potential (E_cell) $\rightarrow$

question 1

Multiple Choice

Does pH have an effect on the cell potential (E_cell) for the following oxidation-reduction reaction?
5Fe²⁺(aq) + MnO₄^-(aq) + 8H⁺(aq) $\rightarrow$ 5Fe³⁺(aq) + Mn²⁺(aq) + 4H₂O(l)

• A) Yes, because E_cell values for all redox reactions depend on the pH.
• B) Yes, because E_cell values for redox reactions involving the hydronium ion depend on the pH.
• C) No, because E_cell values for redox reactions depend only on the major species in the reaction, in this case, Fe²⁺, MnO₄^-, Fe³⁺, and Mn²⁺.
• D) No, because E_cell values for redox reactions depend on concentrations and temperatures but not on pH.
• E) No, because E_cell values for redox reactions do not depend on the pH.

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