Determine the standard cell potential,

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

Problem

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

, for a galvanic cell composed of the following half-cells under standard conditions. Fe

^{3+}

+ e

^{-}

→ Fe

^{2+}

E^{\circ}=+0.77\,\text{V}

^{3+}

+ 3 e

^{-}

→ Al(s)

E^{\circ}=-1.66\,\text{V}

Which of the following is the value of

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

? (a)

-0.89\,\text{V}

(b)

+2.43\,\text{V}

(c)

-2.43\,\text{V}

(d)

+0.89\,\text{V}