Reactions X, Y

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

Problem

Reactions X, Y, and Z each have the same standard cell potential,

E^{\circ}_{\text{cell}}=+0.50\,\text{V}

, but differ in the number of electrons transferred: X:

n=1

n=2

n=4

Which ranking correctly orders the reactions from most negative

\Delta G^{\circ}

(greatest thermodynamic driving force) to least negative

\Delta G^{\circ}

? (a)

X > Y > Z

(b)

Y > Z > X

(c)

Z > Y > X

(d)

Y > X > Z