O-LevelChemistryAcids, Bases & Salts5070/12 · Oct/Nov 2016 · Q191 Mark
When water is liquid, it ionises slightly. H2O(l) ⇌ H+(aq) + OH-(aq) The forward reaction is endothermic. When the temperature of water is increased, which change(s) take place? 1 The water becomes acidic. 2 The water becomes alkaline. 3 More water molecules form ions.
A1 and 3
B1 only
C2 and 3
D3 only
✓ Correct answer
D: 3 only
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