Question

22. Voltaic cells generate electricity by ..
(a) spontaneous redox reaction
(c) sublimation reaction
(b) non-spontaneous redox reaction
(d) thermochemical reaction​

Answer 1

Answer:

Option a) Spontaneous redox reaction

Explanation:

Because, An electrochemical cell is a device that produces an electric current from energy released by a spontaneous redox reaction. This kind of cell includes the galvanic, or voltaic, cell, named after Luigi Galvani and Alessandro Volta.

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Answer 2

• A voltaic cell is an electrochemical cell that generates electricity by chemical reaction.
• in a voltaic cell, oxidation occurs on an anode electrode and reduction occurs on the cathode electrode and salt bridge complete the circuit.

• electricity is generated by a spontaneous redox reaction.
• in this reaction, energy is released where the electron is transferred from anode to cathode.

the correct option is (A)

voltaic cells generate electricity by a spontaneous redox reaction.