However, since it is so sensitive and accurate a lot can occur throughout the procedure to give erroneous results. Titration: A titration is a volumetric analytical technique used to measure the amount of volume added to an unknown sample. The calibration of the balances is periodically checked using a registered One of the most common sources of errors is contaminated glassware (pipette, burett). Sources of errors in titration Titration is a quite sensitive analytical method that lets us determine an unknown concentration of a chemical in solution by introducing a known concentration of another chemical. NaOH is a base which can vary the results because it is hydroscopic, not using a hydroscopic base … Care must be taken as the solution of the known concentration is introduced into a specific volume of the unknown through laboratory glassware such as a burette or pipette. To get the most accurate results, chemists must either take samples from a large population size or obtain multiple samples from the population size selected. Potassium permanganate solutions are not stable and they should be filtered and normalized every 2-3 months. Sources of error/uncertainties: If the tablet is squashed into powder some of it stays in the paper or the powder may also stick to the walls of the beaker when poured. This can be minimized by having a large excess of iodide in order to keep the iodine tied up as tri-iodide ion. It should also be apparent that the titrations involving iodine must be made in cold solutions in order to minimize balance used in a titration experiment are technically sources of systematic error, these errors are easily avoided. Sampling Errors. Problems can also arise in the sampling process. There are plethora of sources of errors to occur in due course of titration. Several factors can cause errors in titration findings, including misreading volumes, mistaken concentration values or faulty technique. There are plethora of sources of errors to occur in due course of titration. Loss of iodine by evaporation from the solution. It can be either of end point error, misreading volumes, concentrations, faulty use of equipment, contaminated glass ware, etc. There are a large number of sources of errors occurring in time of calibration. The solution of the known concentration is introduced into a specific volume of the unknown through a burette or pipette. SOURCE : Titration, as you already know, is a very precise procedure in measuring the volume of liquids. Choosing the right indicator. According to Purdue University, "A titration is a technique where a solution of known concentration is used to determine the concentration of an unknown solution." 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