What is a key characteristic of a voltaic cell?

An anode and a cathode combine to form an electrode.



A nonspontaneous redox reaction converts electrical energy into chemical energy.



An outside power source converts electrical energy into chemical energy.



A spontaneous redox reaction converts chemical energy into electrical energy.

Respuesta :

D.) A spontaneous redox reaction converts chemical energy into electrical energy.

Answer: option D

Explanation:

It convert the chemical energy into electrical energy by spontaneous redox reaction inwhich oxidation Occurs at anode and Reduction Occurs at cathode.

Daniel cell is the best example for Voltaic cell which has CuSO4 solution in cathode compartment and ZnSO4 solution in anode compartment

Cell representation: Zn/Zn+2(aq)//Cu+2(aq)/Cu(s)