limestone is used as a building material (cathedrals, statues etc.), it is quarried out of the ground, although this does cause environmental problems. limestone is virtually insoluble in plain water, yet acid rain is a big problem it dissolves straight away due to the acid reacting with the limestone.
Limestone is mainly calcium carbonate.. CaCO3. When it is heated it thermally decomposes to make calcium oxide (quicklime) and carbon doixide.
calcium carbonate (limestone) CaCO3 -> calcium oxide (quicklime) CaO + Carbon dioxide CO2.
Quicklime reacts with water to produce slaked lime. slaked lime is calcium hydroxide. quicklime + water --> slaked lime, or CaO + H2O--->Ca(OH)2
slaked lime is also an alkali which canbe used to neautralise acid solids in fields. slaked lime works much faster than powdered limestone for this.
Comments
No comments have yet been made