If we have to run a control experiment to confirm the results of a back titration, we will remove the titrant from the experiment. Hence, the correct option is B.
The back titration is not same as the direct titration. In the back titration the analyte is directly reacted with the titrant. The back titration is the indirect titration which is used when the reaction is too slow for the direct titration. During the back titration the reagent B is added along with the analyte A. The amount of reagent B is taken in the excess and after the titration the excess reagent is titrated to titrant T.
The amount of analyte is calculated by the difference between the added reagent and the remaining excess reagent.
Learn more about back titration from the link given below.
https://brainly.com/question/1154532
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