Which of the following statements regarding the polarities and electrode assignments in voltaic and electrolytic cells is correct?
A) The anode and cathode remain the same regardless of whether the cell is voltaic or electrolytic; the difference is that the former releases energy and the latter consumes energy.
B) Electrons flow from the cathode to the anode in a voltaic cell; the electron flow is reversed in an electrolytic cell.
C) In a voltaic cell,the anode is positive and the cathode is negative; the opposite is true in an electrolytic cell (anode -; cathode +) .
D) In a voltaic cell,the anode is negative and the cathode is positive; the opposite is true in an electrolytic cell (anode +; cathode -) .
E) In both types of cells,the anode is positive and the cathode is negative because oxidation happens at the anode and reduction happens at the cathode.
Correct Answer:
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