Which Statement About a Voltaic Cell Is Not Correct?
A) $E _ { \mathrm { red } } ^ { \circ }$

question 20

Multiple Choice

Which statement about a voltaic cell is not correct?

• A) The standard reduction potential is a measure of the propensity for a reduction half-reaction to occur when concentrations are 1 M, the pressure is 1 atm, and the temperature is 298 K.
• B) A reduction half-reaction with a standard reduction potential, \(E _ { \mathrm { red } } ^ { \circ }\)
• , when reversed becomes an oxidation half-reaction with \(E _ { \mathrm { ox } }\)
• = \(- E _ { \mathrm { red } } ^ { \circ }\)
• C) The standard cell potential, \(E _ { \text {cell } } ^ { 0 }\)
• , is a measure of the electromotive force (emf) generated by the cell reactions at 298 K when concentrations are 1 M and the pressure is 1 atm.
• D) The emf of a cell is a measure of the force with which the cell pumps electrons from the cathode to the anode.
• E) The cell voltage measured with a voltmeter is not necessarily the standard cell potential.

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