Which of the following statements about voltaic and electrolytic cells is correct? Group of answer choices The electrons in the external wire flow from cathode to anode in an electrolytic cell. The free energy change, ΔG, is negative for the voltaic cell. The anode will definitely gain weight in a voltaic cell. Oxidation occurs at the cathode of both cells. None of these statements is correct.

The cells can be categorized into voltaic or electrolytic cells. Voltaic cells convert chemical energy into electrical, whereas electrolytic cells convert electric energy into chemical energy.

The correct answer is:

Option B. The free energy change, ΔG, is negative for the voltaic cell.

The voltaic cells, also known as electrochemical cells, are a system in which electrical energy is produced by the spontaneous reaction.

In this reaction, the anode is negative and cathode is positive, and electrons are transferred from the anode to the cathode.

Spontaneous reactions are that reaction that yields free energy, and for such reactions, ΔG is always negative.

Therefore, the voltaic cells will have a negative value for G.

Thus, Option B is correct.

To know more about voltaic cells, refer to the following link:

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The free energy change, ΔG, is negative for the voltaic cell.

Explanation:

One major difference between an electrolytic cell and a voltaic cell is that a voltaic cell produces energy from a spontaneous chemical process while an electrolytic del! Produces energy from a non spontaneous chemical process.

Given a spontaneous chemical process, ∆G is always negative as in a voltaic cell. How ever, in a non spontaneous electrolytic cell, ∆G is positive.

This is the major difference between a voltaic cell or and an electrolytic cell.

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