Question

Give one method of preparing quick lime. What happens when rain water falls on it?

Solution

Calcium oxide is called quicklime. It is prepared by heating the lime stone in a rotatory kiln at 1070-1270 K.
$CaCO subscript 3 space rightwards harpoon over leftwards harpoon with 1070 minus 1270 space straight K on top space CaO space plus space CO subscript 2 upwards arrow$
CO₂ formed escapes and hence the above equilibrium shifts towards the formation of calcium oxide.
When rain-water falls on quick lime, slaked lime is formed.
$CaO space plus space straight H subscript 2 straight O space rightwards arrow space space space stack Ca left parenthesis OH right parenthesis subscript 2 with Slaked space lime below$

Some More Questions From The s-Block Elements Chapter

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The S-Block Elements

Give one method of preparing quick lime. What happens when rain water falls on it?

Some More Questions From The s-Block Elements Chapter

Lithium has highest ionisation energy in group 1 elements, yet it is strongest reducing agent. Comment.

The softness of group 1 elements increases down the group with increasing atomic number. Give reason.

Which is the most reactive alkali metal and why?

Why alkali metals do not form M²⁺ions?

Name the radio active element in group 1. How does it resemble with the remaining elements of the group?

Why alkali metals are normally kept in kerosene oil?

Why lithium cannot be stored in kerosene?

Why does lithium form complexes?

Why are alkali metal ions diamagnetic and colourless?

Why are alkali metals the most electropositive in nature?

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For Daily Free Study Material Join wiredfaculty

The S-Block Elements

Give one method of preparing quick lime. What happens when rain water falls on it?

Some More Questions From The s-Block Elements Chapter

Lithium has highest ionisation energy in group 1 elements, yet it is strongest reducing agent. Comment.

The softness of group 1 elements increases down the group with increasing atomic number. Give reason.

Which is the most reactive alkali metal and why?

Why alkali metals do not form M2+ ions?

Name the radio active element in group 1. How does it resemble with the remaining elements of the group?

Why alkali metals are normally kept in kerosene oil?

Why lithium cannot be stored in kerosene?

Why does lithium form complexes?

Why are alkali metal ions diamagnetic and colourless?

Why are alkali metals the most electropositive in nature?

Mock Test Series

NCERT Sample Papers

Entrance Exams Preparation

Why alkali metals do not form M²⁺ions?