Hearing Aid Batteries Utilize a Zinc/air Electrochemical Cell $\rightarrow$ Zn(s) + 2OH^-(aq)
-1)249 V
O₂(g) + 2H₂O( )

Hearing aid batteries utilize a zinc/air electrochemical cell. The reduction half-reactions and standard reduction potentials for this cell are given below. What is the standard cell potential of a zinc/air cell? Zn(OH) ₂(s) + 2e^- $\rightarrow$ Zn(s) + 2OH^-(aq)
-1) 249 V
O₂(g) + 2H₂O( ) + 4e^- $\rightarrow$ 4OH^-(aq)
+0) 401 V

A) -0.848 V
B) +1.500 V
C) 0.848 V
D) +1.650 V
E) -1.650 V