Determine the standard reduction potential for

Determine the standard reduction potential for
Zn2+ + 2e- → Zn
given the following standard potentials:
Zn + 2Ag+ → Zn2+ + 2Ag; E° = 1.56 V
Ag+ + e- → Ag; E? = 0.80V

A. -0.76 V

B. 0.76 V

C. -0.38 V

D. 0.04 V

Eo = E (cathode) - E (anode)

1.56 = 0.80 - x

1.56 - 0.80 = -x

0.76 = -x

- 0.76 = x