In: Chemistry
An indirect titration is a titration which requires the presence of another species to determine the endpoint. When triiodide (I3-) is used to determine the concentration of formaldehyde in solution, a back titration is used.
For what reason is a direct titration not used?
What is the third species that is added to the titration? _________________________
Describe how the other two species present during the titration work in conjunction to allow the analyst to determine the formaldehyde concentration
Distinguish between the equivalence point and the endpoint of a titration. Describe how inaccuracy in one of these might lead to a titration error?