production of quicklime is around 283 million tonnes. China is by far the world's largest producer, with a total of around 170 million tonnes per year. The United States is the next largest, with around 20 million tonnes per year.

Uses

* Heat: Quicklime releases thermal energy by the formation of the hydrate, calcium hydroxide, by the following equation:
:: (aq) (?H_r = -63.7kJ/mol of CaO)
: As it hydrates,

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