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What statement is NOT true about standard electrode potentials?

A. E°cell is the difference in voltage between the anode and the cathode.
B. The electrode potential of the standard hydrogen electrode is exactly zero.
C. E°cell is positive for spontaneous reactions.
D. Electrons will flow from more negative electrode to more positive electrode.

Respuesta :

Answer:

(a) [tex]E^{\circ}_{cell}[/tex]  is the difference in voltage between the anode and the cathode .

Explanation:

If [tex]E^{\circ}_{cell}[/tex] will be the difference anode and the cathode means [tex]E^{\circ}_{cell}=E^{\circ}_{anode}-E^{\circ}_{cathode}[/tex]n as we know that cathode potential is greater than the anode potential so [tex]E^{\circ}_{cell}[/tex] will become negative and if [tex]E^{\circ}_{cell}[/tex]  is negative then reaction will not be spontaneous so the correct relation of  [tex]E^{\circ}_{cell}[/tex] is [tex]E^{\circ}_{cell}=E^{\circ}_{cathode}-E^{\circ}_{anode}[/tex]

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