Question

What is the importance of back titration?

a. To determine the acid in excess.

b. To determine the base in excess.

c. To determine the average value of acid base titration.

d. To determine the concentration of a substance that is in excess after a chemical reaction.

Answer 1

d. To determine the concentration of a substance that is in excess after a chemical reaction.

A back titration is used when the molar concentration of an excess reactant is known, but the need exists to determine the strength or concentration of an analyte.