O-LevelChemistryAcids, Bases & Salts5070/11 · Oct/Nov 2011 · Q181 Mark

An excess of calcium hydroxide is added to an acidic soil. What happens to the pH of the soil?

Achange in pH: decrease; final pH: 5

Bchange in pH: decrease; final pH: 7

Cchange in pH: increase; final pH: 7

Dchange in pH: increase; final pH: 10

✓ Correct answer

D: change in pH: increase; final pH: 10

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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 18.

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