What is back titration simple definition?
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What is back titration simple definition?
A back titration is a titration method where the concentration of an analyte is determined by reacting it with a known amount of excess reagent. The remaining excess reagent is then titrated with another, second reagent. A back titration may also be called an indirect titration.
What is the difference between titration and back titration?
The key difference between titration and back titration is that in a titration, we usually add a chemically equal amount of standard solution to the analyte whereas, in a back titration, we add an excess amount of standard solution to the analyte.
What is the difference between back and indirect titration?
Indirect titrations are used when, for example, no suitable sensor is available or the reaction is too slow for a practical direct titration. During a back-titration, an exact volume of reagent B is added to the analyte A. This excess is then titrated with titrant T.
What is back titration in complexometric titration?
In a back titration an excess of titrant is added to the sample. After a sufficiently long waiting time, this excess is then titrated with a second titrant. The difference between the added amount of the first and second titrant then gives the equivalent amount of the analyte.
What is back titration Quora?
Back titration is (at least) a two-stage process where the titrand (the unknown) is reacted with a specific, excess volume of titrant of known concentration. The amount of un-reacted titrant is then determined by titration of the unused with a second standard titrant of known concentration.
Why is back titration better than direct titration?
The main difference between back titration and direct titration is that a back titration determines the concentration of the unknown by determining the remaining amount of the compound with a known concentration whereas a direct titration directly measures the concentration of the unknown compound.
Back titration Back titration is a titration done in reverse; instead of titrating the original sample, a known excess of standard reagent is added to the solution, and the excess is titrated.
What is the advantage of a back titration?
Advantages of doing back titration 1- Useful if the endpoint of the reverse titration is easier to identify than the endpoint of the normal titration. 2- Useful when trying to work out the amount of an acid or base in a non-soluble solid.
What is back titration chegg?
In a direct titration, a known excess of reagent that reacts with analyte is used. The excess is then measured with a second titrant. In a back titration, titrants react directly with analyte. In a direct titration, titrants react directly with analyte.
Why back titration is used for aspirin analysis?
Consider using titration to measure the amount of aspirin in a solution. Using back titration the end-point is more easily recognised in this reaction, as it is a reaction between a strong base and a strong acid. This type of reaction occurs at a high rate and thus produces an end-point which is abrupt and easily seen.