| Front | What is a concentration cell? |
| Back | If the concentrations of the ions in 1 of the compartments is not 1 molal, half cell potential is either higher or lower than E°. Thus you can use the same substance in both compartments but at different concentrations to produce electricity. Emf here = difference between 2 E potentials. This is called a concentration cell. To determine direction of electron flow all same rules used. E.g cathodic compartment Is the one with the largest positive (or smallest negative) E. |
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| Front | What is the electromotive force ? |
| Back | The voltage difference between the two electrodes If the concs of all ions involved is 1 molal;Emf = n • E°(reduction) - m •E°(oxidation) Where n and m are the stoichiometric factors by which each half reaction needs to be multiplied to yield a balanced overall reaction. LEO IS A GERC |
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| Front | What is a galvanic cell? |
| Back | Something which uses a spontaneous redox reaction to produce electricity. E.g. battery. |
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