Standard Titration Equipment Selection

Steps:

• Pipette a precise, fixed volume of the unknown NaOH solution into the conical flask using a volumetric pipette.
• Add an indicator to the flask to detect the endpoint.
• Fill the burette with the standard 0.1 mol dm⁻³ HCl solution and titrate until the endpoint is reached.
• Use the initial and final burette readings to determine the HCl volume for concentration calculation via M₁V₁ = M₂V₂.

Why B is correct:

• Burette allows accurate measurement of variable titrant (HCl) volume; volumetric pipette delivers exact, fixed analyte (NaOH) volume, per standard titration protocol for precision.

Why the others are wrong:

• A: Measuring cylinder lacks pipette's accuracy for fixed analyte volume.
• C: Measuring cylinder is imprecise for analyte; pipette unsuitable for variable titrant volume.
• D: Volumetric pipette cannot measure variable titrant volume accurately.

Final answer: B