A redox reaction is set up in an electrochemical cell at 298 K
CHEMISTRY · Single correct · A Level · Chemistry · Electrode potentials · Electrode potentials
Problem
A redox reaction is set up in an electrochemical cell at 298 K, and the measured cell potential is −0.12V. Which of the following conclusions is most accurate?
(a) The reaction is spontaneous as written and will continue until equilibrium is reached.
(b) Because the measured potential is negative but close to zero, the system is essentially at equilibrium under the current conditions.
(c) The reaction is non-spontaneous as written; the reverse reaction is favored under the current conditions.
(d) The magnitude of the negative cell potential reflects a slow reaction rate rather than the direction of spontaneity.