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Faraday's law states that the total amount of chemical change occurring at the electrodes of a chemical cell is related to the total amount of electricity passed through the cell. If, under the proper conditions, 96,496 C of electricity are passed across two electrodes immersed in a conducting solution, electrolysis will take place to the extent that one equivalent of chemical change will occur. Since the coulomb is defined as one ampere second, the measurement of chemical change can be achieved by the measurement of electrical current and time. This principle is the basis of the electroanalytical technique called coulometry.