Question

The action between quicklime and water is characterised by:-

Evolution of hydrogen gas

Formation of slaked lime precipitate

Change in temperature of mixture

Change in colour of product​

Answer 1

The chemical reaction between quicklime (CaO) and water is characterized by change in temperature of mixture. The reaction is exothermic (heat is liberated) and a hissing sound is heard. The product is slaked lime (calcium hydroxide).

CaO+H

2

O→Ca(OH)

2

+ 15000 calories

Explanation:

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