2012 O Level — Chemistry Paper 2 Answers ^new^

When explaining why calcium hydroxide shouldn't be added to soil containing ammonium nitrate, remember it reacts to form ammonia gas

Using the wrong molar ratio in titration calculations (e.g., forgetting the 1:2 ratio between H2SO4cap H sub 2 cap S cap O sub 4 NaOHcap N a cap O cap H