Precise Volume Measurement in School Labs

Steps:

• Note the required volume: 17.60 cm³, needing accuracy to 0.1 cm³.
• Evaluate apparatus for liquid volume precision: burette delivers variable volumes accurately.
• Eliminate gas-specific tools like syringes.
• Rule out fixed-volume or approximate tools like pipettes and cylinders.

Why A is correct:

• A burette measures and delivers variable liquid volumes to 0.1 cm³ precision via graduated scale and stopcock, ideal for titrations or exact aliquots.

Why the others are wrong:

• B: Gas syringe measures gas volumes, not liquids like acid.
• C: Measuring cylinder provides rough estimates (±0.5–1 cm³ accuracy), insufficient for 0.1 cm³ precision.
• D: Pipette delivers fixed volumes (e.g., 10 or 25 cm³), not adjustable to 17.60 cm³.

Final answer: A