What is titration?

What is titration?

• A. A method to determine the composition of a sample by adding a chemical solution of known strength drop by drop to a sample until a certain color change, precipitate, or pH change occurs
• B. A method of heating a sample until it boils away
• C. A technique for separating mixtures by distillation
• D. A method of measuring density by displacement

Answer: (A)

Titration is a quantitative method used to determine the concentration of an unknown solution by reacting it with a solution of known concentration (the titrant) added gradually until the reaction is complete. You measure exactly how much titrant is needed using a burette, and you watch for the endpoint, typically indicated by a color change with an indicator or a pH change. Once the endpoint is reached, you use the known concentration and volume of the titrant and the volume of the unknown solution to calculate the unknown concentration through the reaction’s stoichiometry (often using C1V1 = C2V2). This technique is widely used for acid-base, redox, complexometric, and precipitation titrations. The other described methods—heating to boiling, distillation, and density by displacement—are different techniques for evaporation, separation, or density measurement, not for determining concentration via a controlled reaction.

Titration is a quantitative method used to determine the concentration of an unknown solution by reacting it with a solution of known concentration (the titrant) added gradually until the reaction is complete. You measure exactly how much titrant is needed using a burette, and you watch for the endpoint, typically indicated by a color change with an indicator or a pH change. Once the endpoint is reached, you use the known concentration and volume of the titrant and the volume of the unknown solution to calculate the unknown concentration through the reaction’s stoichiometry (often using C1V1 = C2V2). This technique is widely used for acid-base, redox, complexometric, and precipitation titrations. The other described methods—heating to boiling, distillation, and density by displacement—are different techniques for evaporation, separation, or density measurement, not for determining concentration via a controlled reaction.