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These substances are acids.

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Guido Larkin

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βˆ™ 2y ago
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βˆ™ 11y ago

Limestone, cement and mortar slowly react with carbon dioxide dissolved in rainwater, and wear away. This damages walls made from limestone, and it leaves gaps between bricks in buildings. These gaps must be filled in or "pointed". Pollution from burning fossil fuels makes the rain more acidic than it should be, and this rain makes these problems worse.

Limestone is mainly calcium carbonate, CaCO3. When heated, it breaks down to form calcium oxide and carbon dioxide. Calcium oxide reacts with water to produce calcium hydroxide.

Limestone and its products have many uses: for example, in mortar, cement, concrete and glass.

Limestone can be broken down using heat to produce calcium oxide, which has lots of uses.

  • Add water and a vigorous exothermic reaction takes place. This forms calcium hydroxide.
  • Calcium hydroxide is soluble in water and forms a solution known as limewater which is used to test for carbon dioxide.
  • Calcium oxide, calcium hydroxide and calcium carbonate can be used to neutralise soil acidity.
  • Calcium carbonate can be used to remove acidic gases from coal-fired power station chimneys reducing harmful emissions and acid rain.
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βˆ™ 12y ago

Limestone (calcium carbonate CaCO3) during thermal decomposition produces carbon dioxide (CO2).

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βˆ™ 15y ago

Carbon dioxide

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βˆ™ 13y ago

Vinegar or lemon juice

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Q: What reacts with lime stone?
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