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...Unit electroanalytical methods structure introduction objectives ph metry definition of measurement colourimetirc electrometric principle potentiometry electrodes using meter water and waste acid rains soils ion selective counductometry some basic concepts conductometry the conductance wheatstone bridge a solution experimental application summary terminal questions answers find applications in all branches chemistry industries engineering number other technologies possibility determination low level pollutants has prompted use these environmental studies an method can be defined as one which electrical response chemical system or sample is measured classified into types characterized by measuring terms different quantities such potential current quantity resistance voltage etc bear corresponding names amperometry coulometry voltammetry during past few years there been sudden increase interest techniques this partially attributed to development instrumentation due heavy demands scientis...