Which statement correctly describes electrochemical cells?
a)electrochemical cells involve only oxidation reactions.
b)electrochemical cells involve only reduction reactions.
c)electrochemical cells involve oxidation-reduction reactions.
d)electrochemical cells do not involve oxidation-reduction reactions.

The correct option is C

Explanation:

Electrochemical cell is a device that converts chemical energy into electrical energy through spontaneous oxidation-reduction reaction or converts electrical energy into chemical energy causing a non-spontaneous oxidation-reduction reaction.

Oxidation occurs in the anode (the positively charged electrode) while reduction occurs at the cathode (negatively charged electrode) of the electrochemical cell.

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