O-LevelChemistryAcids, Bases & Salts5070/12 · Oct/Nov 2022 · Q271 Mark

The table shows the pH values of some substances that can be consumed by humans. Which statement about these substances is correct?

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AP is alkaline.

BQ has the lowest concentration of hydrogen ions.

CR can neutralise excess stomach acid.

DS has a pH value closest to neutral.

✓ Correct answer

C: R can neutralise excess stomach acid.

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Topic: Acids, Bases & Salts, O-Level Chemistry (syllabus 5070). Multiple choice, 1 mark.
Source: O-Level Chemistry, Oct/Nov 2022 Paper 1 Variant 2, question 27.

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