Direct titration, Indirect titration, back titration, replacement titration and so on

A back titration is a form of titraiton in which an excess of standard reagent is added and then the reverse of the titration is carried out.

A back titration is a form of titraiton in which an excess of standard reagent is added and then the reverse of the titration is carried out.

when we do not know nothing about the other titrant.

In fact, a back titration is carried out as in a very similar method to an ordinary titration. the only difference is in the context. Consider an unknown acid solution. Then a known amount of excess alkali was added to the solution and made them react. Then the process of finding the amount left from the alkali is known as the back titration.