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Observations That Help Us to Determine a Chemical Reaction

The chemical ...

Question

The chemical reaction between quicklime and water is characterised by :
(a) evolution of hydrogen gas
(b) formation of slaked lime precipitate
(c) change in temperature of mixture
(d) change in colour of the product

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Solution

(c) change in temperature of mixture
Quicklime is treated with water- The chemical reaction between quicklime and water to form slaked lime(Ca(OH)₂) is characterized by a change in temperature. There is a rise in temperature as it is an exothermic reaction.
CaO(s)+H2O(l)⟶Ca(OH)2(s)

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Q. The chemical reaction between quicklime and water is characterised by:

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Observations That Help Us to Determine a Chemical Reaction

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