d. amount of the unknown can be determined by the titrimetric analysis is the correct statement.
In acid-base titration, a solution of known concentration (the titrant) is added to a solution of unknown concentration until the reaction between the two is complete (the endpoint). By knowing the volume and concentration of the titrant and the volume of the unknown solution, the concentration of the unknown solution can be calculated. Therefore, the amount of the unknown can be determined by titrimetric analysis.
The error associated with the endpoint can be minimized by choosing a suitable indicator and performing the titration carefully. The volume of base employed may or may not be greater than that of acid, depending on the nature of the unknown solution. The mass of the impure sample may or may not be greater than that of the impure acid or base, depending on the composition of the impurities.
