When constructing a galvanic cell using two half-reactions with tabulated standard…

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

Problem

When constructing a galvanic cell using two half-reactions with tabulated standard reduction potentials

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

, how is the standard cell potential

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

obtained? (a) Add the two listed

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

values. (b) Average the two listed

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

values. (c) Subtract the

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

value of the anode half–reaction from that of the cathode half–reaction. (d) Take the negative of the sum of the two listed

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

values.