For a redox reaction at 298 K that has a positive standard cell potential

CHEMISTRY · Single correct · A Level · Chemistry · Electrode potentials · Electrode potentials

Problem

E^{\circ}>0

, which statement about the equilibrium constant

K

for the reaction is most accurate? (a)

K=1

because the reaction quotient

Q

equals 1 under standard conditions. (b)

K

cannot be determined without knowing the initial concentrations of all species. (c)

K>1

because the forward reaction is thermodynamically favored at standard conditions. (d)

K<1

because a positive standard potential indicates that the reactants are more stable at equilibrium.