A galvanic reaction proceeds with a standard Gibbs free energy change of and involves…

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

Problem

A galvanic reaction proceeds with a standard Gibbs free energy change of

+190\,\text{kJ}

and involves transfer of

2

moles of electrons per formula unit. Which statement about the standard cell potential

E^{\circ}_{\text{cell}}

for this reaction is most accurate? (a)

E^{\circ}_{\text{cell}}

is positive and has magnitude between

0

and

1\,\text{V}

. (b)

E^{\circ}_{\text{cell}}

is negative and has magnitude between

0

and

1\,\text{V}

. (c)

E^{\circ}_{\text{cell}}

is positive and has magnitude greater than

1\,\text{V}

. (d)

E^{\circ}_{\text{cell}}

is negative and has magnitude greater than

1\,\text{V}