Loss of iodine by evaporation from the solution. 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. Titration: A titration is a volumetric analytical technique used to measure the amount of volume added to an unknown sample. There are plethora of sources of errors to occur in due course of titration. 1.) Apart from general sources of titration errors, when titrating hydrogen peroxide we should pay special attention to titrant. The solution of the known concentration is introduced into a specific volume of the unknown through a burette or pipette. This can be minimized by having a large excess of iodide in order to keep the iodine tied up as tri-iodide ion. Problems can also arise in the sampling process. Several factors can cause errors in calibration results, including misreading volumes, faulty concentration values, or a wrong technique. 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. It should also be apparent that the titrations involving iodine must be made in cold solutions in order to minimize 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." 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. It can be either wrong endpoint, wrong reading sizes, concentrations, faulty use of equipment, contaminated glass panels, etc. I’m sure you’ve learned at some point that the pH value of the titration endpoint depends on the acid dissociation constant (K a) of the acid and base that are used.If a strong base is titrated by a strong acid, the pH value at the endpoint is around 7. balance used in a titration experiment are technically sources of systematic error, these errors are easily avoided. One of the most common sources of errors is contaminated glassware (pipette, burett). Several factors can cause errors in titration findings, including misreading volumes, mistaken concentration values or faulty technique. Choosing the right indicator. The calibration of the balances is periodically checked using a registered It can be either of end point error, misreading volumes, concentrations, faulty use of equipment, contaminated glass ware, etc. sources of errors. There are a large number of sources of errors occurring in time of calibration. However, since it is so sensitive and accurate a lot can occur throughout the procedure to give erroneous results. SOURCE : Titration, as you already know, is a very precise procedure in measuring the volume of liquids. There are plethora of sources of errors to occur in due course of titration. Sampling Errors. It can be either of end point error, misreading volumes, concentrations, faulty … 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. Potassium permanganate solutions are not stable and they should be filtered and normalized every 2-3 months. We should pay special attention to titrant in time of calibration a specific volume of liquids a burette pipette! 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