Question

A voltaic cell differs from an electrolytic cell in that in a voltaic cellA. energy is produced when the reaction occursB. energy is required for the reaction to occurC. both oxidation and reduction occurD. neither oxidation nor reduction occurs

Answer 1

Chemistry voltaic and electrolytic cell help?
Give the sign of the electrodes and the reaction that occurs at each for both voltaic and electrolytic cells. Yes this is homework, but I'm not...
Update:
and what does the question mean by "the sign of the electrodes"?
3 answers · Chemistry

Best Answer
In a voltaic cell (one that happens spontaneously), electrons flow from a negative electrode to a positive electrode (anode ==> cathode). The reaction that happens is a redox reaction where the anode is oxidized (goes from a solid to an ion) and the cathode is reduced (going from an ion to a solid).