When water is added drop by drop to quicklime (also known as calcium oxide, CaO), a highly exothermic reaction occurs, producing heat and steam. This process is known as slaking or hydration, and it results in the formation of calcium hydroxide (Ca(OH)â‚‚), commonly known as slaked lime or hydrated lime. During the reaction, the water molecules react with the calcium oxide, breaking the chemical bonds and releasing heat.
The chemical equation for this reaction is:
CaO + H₂O → Ca(OH)₂ + heat
The heat generated can cause the mixture to become very hot, and in some cases, it may even emit a bright white light. The amount of heat produced in this reaction can cause the water to evaporate and form steam. Quicklime could cause severe burns if it comes in contact with skin during the hydration process due to the intense heat generated. The end product, calcium hydroxide, is a white powdery substance that is used in various industries, including construction (to make mortar), water treatment, and agriculture (as a soil pH adjuster).
Explain what happens when water is added drop by drop to quicklime
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