What is the standard cell potential ( for a galvanic cell constructed with the following?
Ag⁺(aq) + e → Ag(s) E⁰ = +0.80 V
Fe³⁺(aq) + e → Fe²⁺(aq) E⁰ = +0.70 V
a) + 1.50 V
b) -0.10 V
c) -1.50 V
d) +0.10 V