Which piece of glassware is most appropriate for accurately adding sodium hydroxide to a hydrochloric acid solution during a titration?

• A. Erlenmeyer flask
• B. Beaker
• C. Burette
• D. Graduated cylinder

Answer: (C)

Verified step by step guidance

1. Understand the purpose of the titration: it is a technique used to determine the concentration of an unknown solution by adding a reagent of known concentration until the reaction reaches the equivalence point.
2. Identify the role of the glassware in the titration: the piece of glassware used to add the titrant (in this case, sodium hydroxide) must allow for precise and controlled delivery of liquid.
3. Evaluate each option: an Erlenmeyer flask is typically used to contain the solution being titrated (hydrochloric acid), a beaker is generally used for mixing or holding solutions but lacks precision, and a graduated cylinder measures volume but is not designed for controlled addition.
4. Recognize that a burette is specifically designed for titrations because it allows the user to add the titrant dropwise with high accuracy and to measure the exact volume dispensed.
5. Conclude that the burette is the most appropriate glassware for accurately adding sodium hydroxide to hydrochloric acid during a titration.