Experiment of thermal decomposition of calcium carbonate (CaCo3) in marble, limestone and seashells.
This process is alson known as calcination and happens above 900 degrees Celsius. Calcium carbonate is decomposed into calcium oxide (quicklime) and carbon dioxide (CO2).
CaCO3 + heat ⇨ CaO + CO2
It is an endothermic reaction, because it absorbs heat.
If I add water to the calcium oxide (quicklime) it happens an hydratation reaction. It is an exothermic reaction, it gives off heat.
CaO + H2O ⇨ Ca(OH)2 + heat
As a product of this reaction calcium hydroxide (slaked lime) is obtained.
With a thermal imaging camera it is possible to see the heat that is produced when hydrating the quicklime.
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en.wikipedia.org/wiki/Marble
en.wikipedia.org/wiki/Limestone
en.wikipedia.org/wiki/Seashell
en.wikipedia.org/wiki/Calcium...
en.wikipedia.org/wiki/Calcium...
en.wikipedia.org/wiki/Endothe...
en.wikipedia.org/wiki/Exother...
en.wikipedia.org/wiki/Exother...
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Негізгі бет Calcination of Marble, Limestone and Seashells. How to Make Quicklime
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