A housewife wanted her home to be whitewashed. She bought 10 kg of quicklime and added it to 30L of water of water. On adding lime to water she noticed that the water appeared to be boiling even when it was not being heated. Give reason for her observation. Write the chemical equation and name the product formed.

Open in App

Solution

1. Reaction
$CaO (s) + H {}_{2}O (l) \to Ca (OH) {}_{2}(aq) + Heat$
Calcium oxide Water Calcium hydroxide
(Quick lime) (Slaked lime)
2. Product formed is slaked lime.
3. Reason
It is a combination reaction (two reactants combining to form new product) and it is highly exothermic reaction (reaction in which heat energy is released along with formation of product).
Since it is an exothermic reaction lots of heat energy is released therefore it appeared as water is boiling without being heated.

Suggest Corrections

Similar questions

Q. A housewife wanted her house to be whitewashed. She bought 10 kg of quicklime from the market and dissolved it in 30 litres of water. On adding quicklime to water she noticed that the water started boiling even when it was not being heated. Give reason for her observation. Write the corresponding chemical equation and name the product formed.

A housewife wanted her house to be whitewashed. She bought 10 kg of quick lime from the market and dissolved it in 30 liters of water. She noticed that water started boiling even when it was not being heated. Give a reason for her observation. Write the corresponding equation and name the product formed.

A house wife wanted her house to be white washed. She bought 10 kg of quick lime from the market and dissolved in 30 litres of water. On adding lime to the water, she noticed that the water started boiling even when it was not being heated. Give reason for her observation. Write the corresponding equations and name the product formed. [3 MARKS]

Q. A painter wanted to white wash a house. She bought 10 kg of quick lime from the market and dissolved in 30 litres of water. On adding lime to the water, she noticed that the water started boiling even when it was not being heated. Give reason for her observation. Write the corresponding equations and name the product formed.

Join BYJU'S Learning Program