Which Statement Below Regarding the Polarities and Electrode Assignments in Voltaic

question 65

Multiple Choice

Which statement below regarding the polarities and electrode assignments in voltaic and electrolytic cells is true?

• 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.

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Definitions:

Dependent Sample Designs

Research designs involving comparisons of measurements from the same group of subjects under different conditions or at different times.

Extraneous Variables

Factors in a study that could undermine the internal validity by influencing the dependent variable in a way not intended by the research.

Independent Variables

Variables in an experiment that are manipulated or changed by the researcher to observe their effect on dependent variables.

Counterbalanced Crossover Design

An experimental design where participants are exposed to multiple conditions in a sequence that is randomized to control for the order effects.