What is the E.M.F

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

Problem

What is the E.M.F. of the cell, given

E^{\circ}_{\text{A}/\text{A}^+} = 0.35\,\text{V}

and

E^{\circ}_{\text{B}/\text{B}^+} = -0.42\,\text{V}

? The cell has the electrodes A and B in their respective electrolytes. (a)

+0.07\,\text{V}

(b)

-0.07\,\text{V}

(c)

+0.77\,\text{V}

(d)

-0.77\,\text{V}