Electrolysis is a:
Correct answer: B. Oxidation-reduction reaction
- A. Spontaneous reactions
- B. Oxidation-reduction reaction
- C. Reduction reaction
- D. Oxidation reaction
Explanation
Electrolysis is a process where an electric current is passed through a substance to effect a chemical change. This change involves a transfer of electrons, categorizing it as an oxidation-reduction (redox) reaction. In electrolysis, oxidation occurs at the anode (loss of electrons) and reduction occurs at the cathode (gain of electrons). Therefore, the correct option is an oxidation-reduction reaction. Spontaneous reactions do not require external energy, which is contrary to electrolysis. Options describing only reduction or only oxidation are incomplete as electrolysis encompasses both processes.
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About Electrochemistry
Electrochemistry describes electron transfer through oxidation and reduction, identifies oxidizing and reducing agents, and applies oxidation numbers to balance redox equations. It also covers electrode potential and the standard hydrogen electrode, which provides the reference for comparing the reduction tendencies of other electrodes.
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