Consider the Voltaic Cell Based on the Following Reaction:
$\rightarrow$

question 24

Multiple Choice

Consider the voltaic cell based on the following reaction:
Zn(s) + Ni^{2 +}(aq) $\rightarrow$ Zn^{2 +}(aq) + Ni(s)
Two students are assigned to measure the standard cell potential at 25°C.Student 1 claims that both solutions of ions have to be at exactly 1.00 M concentration, but student 2 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?

• A)Student 1 is right because, by definition, standard cell potentials must be measured at concentrations of 1.00 M.
• B)Student 1 is right because she understands the Nernst equation and what it describes.
• C)Student 2 is right because she understands the Nernst equation and what it describes.
• D)Student 2 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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