: Exercise :
1. "To pour water on calcium oxide." Which is another way to classify this reaction ? Explain.
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Answer:
When water is added to calcium oxide (quicklime), it will be converted to calcium hydroxide (slaked lime) with the liberation of enormous amount of heat.
CaO + H2O → Ca(OH) 2 + heat
It is an exothermic reaction.
Calcium hydroxide is an alkali.
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