What happens chemically when quick lime is added to water-filled in the bucket?What happens chemically when quick lime is added to water-filled in the bucket?

When quicklime (calcium oxide, CaO) is added to water, it undergoes a vigorous exothermic reaction to form calcium hydroxide (slaked lime, Ca(OH)2). The reaction can be represented by the following chemical equation:

CaO(s) + H2O(l) → Ca(OH)2(aq)

In this reaction:

Quicklime (CaO) reacts with water (H2O).
Calcium hydroxide (Ca(OH)2) is produced.
The reaction releases a significant amount of heat due to its exothermic nature.
This reaction is used in various applications, such as in the preparation of lime mortar, in water treatment processes to adjust pH levels, and in the production of calcium hydroxide-based products. The resulting calcium hydroxide solution is strongly alkaline.