carbonates
- Lime/Quicklime: calcium oxide
- Limestone: calcium carbonate
- Slaked Lime: calcium hydroxide
1) Describe the manufacture of quicklime (calcium oxide) from limestone (calcium carbonate)
- Lime is manufactured by limestone by heating limestone.
2) Uses of limestone
Uses of Quicklime:
Uses of Slaked lime and lime:
Uses of limestone:
- Making steel from iron
- To neutralise acidity in soil
- Drying agent in industry
Uses of Slaked lime and lime:
- Neutralise acidity in soil and in lakes affected by acid rain.
- Neutralising acidic industrial waste products, e.g. flue gas desulfurisation.
Uses of limestone:
- Making cement: by heating powdered limestone with clay.
- Extraction of iron from iron ore: limestone remove acidic impurities from the iron by reacting with them to form molten slag.
2) Describe the thermal decomposition of calcium carbonate (limestone)
\[CaCO_{3}\rightarrow CaO+CO_{2}\]
