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O-LevelChemistryAcids, Bases & Salts5070/11 · Oct/Nov 2018 · Q11 Mark

A student titrates aqueous sodium hydroxide from a burette with dilute hydrochloric acid in a conical flask. After the titration is complete, the conical flask is emptied. What is the correct procedure before the next titration?

ARinse out the conical flask with aqueous sodium hydroxide.
BRinse out the conical flask with dilute hydrochloric acid.
CRinse out the conical flask with distilled water.
DUse the conical flask again without rinsing.

✓ Correct answer

C: Rinse out the conical flask with distilled water.

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About this question

Topic
Acids, Bases & Salts, O-Level Chemistry (syllabus 5070). Multiple choice, 1 mark.
Source
O-Level Chemistry, Oct/Nov 2018 Paper 1 Variant 1, question 1.

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