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-