amperometric titration : A method of determining the chemical composition of a solution by measuring the current passing through a cell containing the solution; the potential is held constant during the titration for both the indicator and reference electrodes, with changes in the current being measured. The current flowing through the cell is measured as
back titration : A technique in volumetric analysis in which a known excess amount of a reagent is added to the solution to be estimated. The unreacted amount of the added reagent is then determined by titration, allowing the amount of substance in the original test solution to be calculated. بوسترات (لوحات) كيميائية بدقة