This video explains the differences between voltaic cells and electrolytic cells. Voltaic cells convert chemical energy into electrical energy through spontaneous chemical reactions, whereas electrolytic cells use an external power source to drive non-spontaneous chemical reactions, converting electrical energy into chemical energy. Voltaic cells are typically used in batteries and fuel cells, while electrolytic cells are used in processes like electroplating and water electrolysis.
This video explains the differences between voltaic cells and electrolytic cells. Voltaic cells convert chemical energy into electrical energy through spontaneous chemical reactions, whereas electrolytic cells use an external power source to drive non-spontaneous chemical reactions, converting electrical energy into chemical energy. Voltaic cells are typically used in batteries and fuel cells, while electrolytic cells are used in processes like electroplating and water electrolysis.
Problem 1: In a voltaic cell, what happens at the (+) and (-) electrodes?
At the anode of a voltaic cell, oxidation occurs, releasing electrons At (-) Electrode. At the cathode, reduction occurs, gaining electrons. At (+) Electrode
Problem 2: In an electrolytic cell, what is the direction of electron flow?
In an electrolytic cell, electrons flow from the external power source to the cathode, driving the non-spontaneous reaction.
Problem 3: Compare the energy requirements of voltaic and electrolytic cells.
Voltaic cells generate electrical energy from spontaneous reactions, while electrolytic cells require an external power source to drive non-spontaneous reactions.
Problem 4: What type of reactions occur at the (-) electrodes in electrolytic cells?
In electrolytic cells, reduction occurs at the cathode(-) electrode, and oxidation occurs at the anode (+) electrode, driven by an external power source.
Problem 5: In voltaic and electrolytic cells, which electrode is positive and which is negative?
In a voltaic cell, the anode is negative and the cathode is positive. In an electrolytic cell, the anode is positive and the cathode is negative.