In a voltaic cell, oxidation occurs at the negative electrode and reduction occurs at the positive electrode. Electrons flow through the external circuit from the negative to the positive electrode, creating an electrical current. The charge is carried through the solution by ions, not electrons and protons. Additionally, electrical energy is produced by the chemical reaction, not consumed.

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In a Voltaic Cell

Question 47

Multiple Choice

In a voltaic cell:

A) oxidation occurs at the positive electrode.
B) electrons flow through the external circuit from the negative to the positive electrode.
C) the charge is carried through the solution by electrons and protons.
D) electrical energy is consumed to cause a chemical change.
E) none of these.

Correct Answer: