For a classroom demonstration, a chemistry teacher needs to measure the volume of a liquid accurately. Which piece of laboratory equipment should the teacher use?

• A. Erlenmeyer flask
• B. Test tube
• C. Graduated cylinder
• D. Beaker

Answer: (C)

Verified step by step guidance

1. Understand the purpose of the measurement: The teacher needs to measure the volume of a liquid accurately.
2. Review the common laboratory equipment options and their typical uses: An Erlenmeyer flask is mainly used for mixing and heating liquids, a test tube is used for holding small samples, a beaker is used for approximate volume measurements and mixing, and a graduated cylinder is specifically designed for precise volume measurements.
3. Recall that graduated cylinders have marked graduations along their length, allowing for more accurate volume readings compared to other glassware.
4. Conclude that the graduated cylinder is the best choice for measuring liquid volume accurately because it is calibrated for this purpose.
5. Therefore, the teacher should use a graduated cylinder to measure the volume of the liquid accurately.