SC-1119
Neutralisation
Lower Sec Science · Secondary 2 · Hard · Neutralisation
A gardener accidentally spills some dilute hydrochloric acid on the ground. To make the spill safe, he sprinkles solid calcium carbonate powder over it. Which statement best describes what happens?
- The acid is neutralised to form a salt, water and carbon dioxide gas.
- The calcium carbonate dissolves without reacting and the acid remains unchanged.
- Only hydrogen gas is produced and the solution becomes more acidic.
- The acid is converted into pure water with no gas produced.
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