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Batteries

Exercise 4

            

Given the silver oxide button cell:  Zn(OH)42-/Zn and Ag2O/Ag The zinc is oxidised in a basic medium. Write the equations of the reactions at the electrodes!

A natural reaction takes place between the strongest reducing agent Zn and the strongest oxidising agent Ag2O: Ag2O+H2O+2e- 2Ag+2OH- Zn+4 OH- Zn(OH)42-+2e-