Titrations Titration is the process of controlled addition of a substance to a s

Question

Titrations Titration is the process of controlled addition of a substance to a second substance with which it reacts. The substance to be added is called the titrant and is delivered from a piece of equipment which is calibrated to record exactly how much elivered. This is usually a buret. The substance which is receiving the titrant is called the analyte. In volumetric titrations, the analyte solution is typically contained in an Erlenmeyer flask which is shaped to allow the experimenter to swirl the contents without danger of spilling. Titrant is added from the buret until precisely the stoichiometric amount has been added. That is the real point of a titration. The experimenter will need some indication that it is time to stop. Usually a visual indicator is used. This is a species with similar chemical properties to the analyte where it exhibits one color in a pre reacted form and a different color in a post reacted form. It is important that the titrant react preferentially with the analyte. Only when all of the analyte is gone will the titrant react with the indicator, thus causing the color change which is the signal for the experimenter to stop the titration. A titration allows the analyst to determine how much analyte is present in a sample. In a titration it is critical that the concentration of either the titrant or the analyte be known. At the start of an analysis, one typically prepares titrant of approximate molarity then titrates against a known analyte sample to determine its exact concentration. This is known as standardization. Once the titrant has been standardized, is can be used in the analysis of samples with unknown concentration of anal

Explanation / Answer

Titration is the quantitative process to determine the concentration of a species in a solution ie analyte (which is kept in a enrelmeyer flask) through addition of a standard solution ie titrant using burette. In this process We generally makes use of indicator to determine the end point (where whole of the analyte react with titrant).

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