Chemistry · May / June 2022 · Paper 11 · Question 13

5070The characteristic properties of acids and bases

Aqueous calcium hydroxide is an alkali. It is neutralised by dilute nitric acid to produce calcium nitrate and water. What is the ionic equation for this reaction?

ACa+ + OH– + H+ + NO3– → CaNO3 + H2O
BCa(OH)2 + 2HNO3 → Ca(NO3)2 + H2O
CCa2+(OH–)2 + 2H+NO3– → Ca2+(NO3–)2 + H2O
DOH– + H+ → H2O

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Correct answer: D. OH– + H+ → H2O

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