Question

When water is added to a white powder A vigerous reaction takes place and evolve large amount of heat. A is also used for white washing. Identify the compound A and write balanced chemical equation for reaction of A with water. Also give name for compounds.

Answer 1

$\huge\text{\underline{Answer}}$

$\bold\red{A = CaO}$

When water is added to the White powder of calcium oxide or quick lime it forms the slaked lime which is used in washing with release of large amount of heat.

calcium oxide reacts with cold water to form calcium hydroxide which is a base .The reaction is considered as exothermic because large amount of heat is evolved in this reaction.

The balanced reaction for this is :-

$\bold\red{CaO(s) + H2O(l) => Ca(OH)2(s). }$

The product formed is used in white washing.

Answer 2

Answer:

When water is added to the White powder of calcium oxide or quick lime it forms the slaked lime which is used in washing with release of large amount of heat.

calcium oxide reacts with cold water to form calcium hydroxide which is a base .The reaction is considered as exothermic because large amount of heat is evolved in this reaction.

The balanced reaction for this is :-

\bold\red{CaO(s) + H2O(l) = > Ca(OH)2(s). }CaO(s)+H2O(l)=>Ca(OH)2(s).

The product formed is used in white washing.

Explanation:

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