Titration

2 marks · Easy

During a titration, a student records an initial burette reading of 6.40 cm³ and a final reading of 28.15 cm³. Calculate the volume of solution delivered from the burette.

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21.75 cm³ (±0.05)

Common mistakes: subtracting the wrong way (initial minus final)

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Marking points

M1 · 1 mark · Subtracts initial volume from final volume: 28.15 – 6.40. (follow-through)

A1 · 1 mark · Correctly calculates 21.75 cm³ (within 0.05 cm³). (follow-through)

Worked solution

Volume delivered = final reading – initial reading