(E) oxidation takes place at the cathode. 22. What would be the value in volts for a zinc-silver galvanic cell? Standard Reduction Potentials 2+ Zn+ + 2e Zn E= -0.76 V E = +0.80 V Ag++ e Ag (A) 0.76-0.80 (B) 0.76-(2x 0.80) 0.76 + 0.80 (D) 0.76+ (2 0.80)