Which of the following is false about a spontaneous chemical reaction that generates electricity:a. Oxidation and reduction half-reactions occur at electrodes in electrochemical cells. b. All electrochemical reactions involve the transfer of electrons. c. Reduction occurs at the cathode. d. Oxidation occurs at the anode. e. All voltaic (galvanic) cells involve the use of electricity to initiate nonspontaneous chemical reactions.

Question

Chemistry

Oliver

18 June, 00:50

Which of the following is false about a spontaneous chemical reaction that generates electricity:a. Oxidation and reduction half-reactions occur at electrodes in electrochemical cells. b. All electrochemical reactions involve the transfer of electrons. c. Reduction occurs at the cathode. d. Oxidation occurs at the anode. e. All voltaic (galvanic) cells involve the use of electricity to initiate nonspontaneous chemical reactions.

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Maxim Dyer · Answer 1

Answer: e. All voltaic (galvanic) cells involve the use of electricity to initiate nonspontaneous chemical reactions.

Explanation:

Electrochemical cell or galvanic cell or voltaic cell is a cell which converts chemical energy to electrical energy.

There are two electrodes in an electrochemical cell, where one is called as anode and one is called as cathode.

At cathode reduction takes place and at anode oxidation takes place. Thus the electrons generated at anode travel towards cathode and flow of electrons lead to generation of electricity.

Thus chemical reactions lead to generation of electricity.

Thus the statement that all voltaic cells involve the use of electricity to initiate nonspontaneous chemical reactions is false.