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 zinc/air cell?
Zn(OH)2(s) + 2e- Zn(s) + 2OH-(aq)
-1.249 V
O2(g) + 2H2O(
) + 4e- 4OH-(aq)
+0.401 V
Correct Answer:
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