Upon completion of this module, you should be able to explain the effect of concentration on cell EMF, identify the components of a concentration cell, and use the Nernst equation to solve for cell potential for a concentration cell. The flow of electrons in a galvanic cell is always from the anode to the cathode. This process is spontaneous. The electrons flow from the anode to the cathode because the cathode has a lower electrical potential energy than the anode. The electrical potential is measured in volts. The electromotive force (EMF) is the force required to move electrons through the external circuit.
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