Consider the Voltaic Cell Based on the Following Reaction:
Ma(s) $\rightarrow$

question 33

Multiple Choice

Consider the voltaic cell based on the following reaction:
Ma(s) + Mb⁺(aq) $\rightarrow$ Ma⁺(aq) + Mb(s)
Two students are assigned to measure the standard cell potential. Yvonne claims that both solutions of ions have to be at exactly 1.00 M concentration, but Zelda is sure that the measurement will be the same if the concentrations of the two solutions are equal, but not necessarily 1.00 M. What do you think? (The temperature is controlled at 25°C, so that's not an issue.)

• A) Yvonne is right because by definition standard cell potentials must be measured at concentrations of 1.00 M.
• B) Yvonne is right because she understands the Nernst equation and what it describes.
• C) Zelda is right because she understands the Nernst equation and what it describes.
• D) Zelda is right because cell potentials do not depend on the concentration.
• E) Both are right because cell potentials do not depend on the concentration.

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