Question

How does a back titration differ from a regular titration?

Answer 1

As we know that titration is the chemical analysis process in which the amount of some constituent of a sample is being determined by adding an exactly known quantity of other substance to the measured sample. In which the desired constituent is found to react in a known and definite proportion. There are various types of titrations.

Complete answer:
- We will discuss about direct or regular titration and back titration in brief:
As we know that in direct titration, we add a standard titrant to the analyte till we reach the end point.
And in direct titration, we add a standard titrant to the analyte and then we basically titrate the excess of titrant in order to determine how much is present in excess.
- Let us see the main differences in between a back titration and regular titration as:

BACK TITRATION	REGULAR TITRATION
1. In back titration two chemical reactions occur	1. In regular titration one chemical reaction occur
2. back titration is basically done in between two known compounds.	2. regular titration is done between a known compound and an unknown compound.
3. In back titration titrant is the remaining amount of the reagent added in excess.	3. In regular titration titrant is the unknown compound

Note: It is found that back titration is used to determine the accurate end point when there are sharp colour changes observed. Whereas, it is found that regular titration is used when the endpoint of the titration is easily obtained.