Question

Please help

Which statement is true about a nickel-cadmium dry cell?

The anode reaction is NiO2+H2O+2e−→Ni(OH)2+2OH−.


The cathode reaction is Cd+2OH−→Cd(OH)2+2e−.


The cathode reaction is NiO2+H2O+2e−→Ni(OH)2+2OH−.


The cathode reaction is Cd+NiO2+2H2O→Cd(OH)2+Ni(OH)2.

Answer 1

I think I answered this already but I'll put it again:

The cathode reaction is NiO2+H2O+2e−→Ni(OH)2+2OH−.