Which of the following laboratory procedures is most appropriately performed in an Erlenmeyer flask?

• A. Mixing solutions by swirling to prevent spillage
• B. Heating solids to high temperatures
• C. Filtering a precipitate using a Büchner funnel
• D. Measuring precise volumes of liquids

Answer: (A)

Verified step by step guidance

1. Understand the design and typical uses of an Erlenmeyer flask: it has a conical shape with a narrow neck and a flat bottom, which makes it ideal for mixing liquids by swirling without spilling.
2. Consider the option 'Mixing solutions by swirling to prevent spillage'—the narrow neck of the Erlenmeyer flask helps contain liquids during swirling, reducing the risk of spills.
3. Evaluate 'Heating solids to high temperatures'—Erlenmeyer flasks are not designed for direct high-temperature heating of solids; crucibles or other heat-resistant containers are more appropriate.
4. Assess 'Filtering a precipitate using a Büchner funnel'—this procedure typically requires a flat, stable surface like a filter flask, which has a side arm for vacuum filtration, not an Erlenmeyer flask.
5. Review 'Measuring precise volumes of liquids'—volumetric flasks or graduated cylinders are used for accurate volume measurements, as Erlenmeyer flasks are not calibrated for precision.