O-LevelChemistryAcids, Bases & Salts5070/11 · Oct/Nov 2011 · Q11 Mark

In a titration between an acid (in the burette) and an alkali, you may need to re-use the same titration flask. Which is the best procedure for rinsing the flask?

ARinse with distilled water and then with the alkali.

BRinse with tap water and then with distilled water.

CRinse with tap water and then with the acid.

DRinse with the alkali.

✓ Correct answer

B: Rinse with tap water and then with distilled water.

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Topic: Acids, Bases & Salts, O-Level Chemistry (syllabus 5070). Multiple choice, 1 mark.
Source: O-Level Chemistry, Oct/Nov 2011 Paper 1 Variant 1, question 1.

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