Question

What happens when quick lime comes into contact with water?

b. How say correct answer means
I will give my number
and I mark as brainlist .​

Answer 1

When quick lime reacts with water, a large amount of heat is liberated along with the slaked lime as the product.

• Quick lime is the calcium oxide whereas slaked lime is the calcium hydroxide.
• It is a type of combination reaction.
• Here, two or more compounds react with each other to form a single product and such reactions are also known as synthesis reactions.
• It is a kind of exothermic reaction since the breaking of bonds evolves a huge amount of heat energy.
• It is also a redox type of reaction because it involves both reduction and oxidation.
• In this reaction, oxygen gets reduced while calcium gets oxidised.

Answer 2

When quicklime comes into contact with water, it forms slaked lime and heat is evolved.

Explanation:

• When quicklime is added to water, a compound called slaked lime is formed.
• During this process, there is a rise in the temperature that leads to the evolution of heat.
• The calcium oxide in quicklime reacts with water to form another compound called calcium hydroxide that is also known as slaked lime. The reaction is as followed, $\mathrm{CaO}+\mathrm{H}_{2} \mathrm{O} \rightarrow \mathrm{Ca}(\mathrm{OH})_{2}$.
• Slaked lime (Calcium hydroxide) is a white coloured powder that is soft and is used in making mortar as well as cement. It also has a lot of industrial uses.