Question

Explain smoke waterfall experiment. (Write aim, material required, method, ovservation, result & conclusion)

Answer 1

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➡Aim: Formation of slaked lime by the reaction of calcium oxide with water 

➡Apparatus: Calcium oxide, beaker, and water

➡Procedure: Take a small amount of calcium oxide or quick lime in a beaker. Slowly add water to this. Touch the beaker

➡Observation: The beaker becomes hot (exothermic reaction). It reacts vigorously with water.

➡Conclusion: Slaked lime is formed by the reaction of the combination of calcium oxide with water

CaO(s)              +            H2O(l)              →               Ca(OH)2(aq) + heat

(quick lime)                                                                 (Slaked lime) (exothermic reaction)

This is a combination reaction, and also an exothermic reaction.

Hope this helps you ☺️☺️