Question

Given: Fe3+(aq) + e- ? Fe2+(aq) E? = +0.771 V
Pb2+(aq) + 2 e- ? Pb(s) E? = -0.126 V

Calculate the standard cell potential for the cell based on thereaction below and predict whether the reaction can occurspontaneously under standard conditions.


Pb2+(aq) + 2 Fe2+(aq) ? 2 Fe3+(aq) + Pb(s)

a. E? = -0.897 V, nonspontaneous
b. E? = -0.897 V, spontaneous
c. E? = +0.897 V, nonspontaneous
d. E? = +0.897 V, spontaneous