Question

Consider the NiCd (nickle cadmium) cell found in rechargeable batteries.

1.)Which element is the cathode when the cell is recharging (being electrolytic)?

2.)How many cells must be present to produce 1.2 V

3.)Which element is the anode when the cell is discharging (being galvanic)

4.)What is the cell potential when discharging

Answer 1

I believe all of these questions are answered here.
https://en.wikipedia.org/wiki/Nickel%E2%80%93cadmium_battery

Scroll down to the chemical part to get the equations and discussion of charge vs discharge.

Answer 2

Thanks, but I don't know how to solve it. This was a question from my review

Answer 3

What is to solve?
2. is 1.2v and that site said so.
4. is 1.2v and that site all but said so. The words were something like that the cell continued to discharge produce maximum voltage until it was all but completely discharged.
For which is the anode and cathode, find those equations on the site I gave and apply this definition.
The anode is where oxidation occurs and it is + in galvanic. The cathode is - in charging mode.