Respuesta :
A titration is a technique where a solution of known concentration is used to determine the concentration of an unknown solution. Typically, the titrant (the know solution) is added from a buret to a known quantity of the analyte (the unknown solution) until the reaction is complete.
Titration is a common analytical method in chemistry laboratories. Most students have to do at least one acid-base titration in the lab before they graduate, and phenolphthalein is usually the indicator they use. Although it may sometimes feel like a tedious task.