Consider the Voltaic Cell Based on the Following Reaction

question 163

Multiple Choice

Consider the voltaic cell based on the following reaction: 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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Definitions:

Soluble

The ability of a substance to dissolve in a solvent, forming a homogenous mixture at a specified temperature and pressure.

2-Butanone

A simple ketone with the formula CH3C(O)CH2CH3, also known as methyl ethyl ketone (MEK), used as a solvent.

Transformation

The process of changing the structure, composition, or form of a molecule or substance through chemical reactions.

Methylbutan-1-ol

A primary alcohol derived from butane by replacing one hydrogen atom with a hydroxyl group at the first carbon.