What happens when an Aquarius solution of quick lime is applied one wall for white washing purpose and allowed to dry? Write the related equation and also name the products

Open in App

Solution

Actually an aqueous solution of slaked lime i.e calcium hydroxide is prepared and applied on the walls for white washing. This calcium hydroxide on the walls slowly reacts with CO2present in the air and forms a layer of calcium carbonate which gives a shiny finishing to the walls.
Chemical equation :
Ca(OH)2 (aq) + CO2 (g)→ CaCO3 (s) + H2O(l)slaked lime

Suggest Corrections

Similar questions

(a) What happens when ethanoic acid reacts with sodium hydroxide? Write the equation of the reaction involved.
(b) What happens when vegetable oils are hydrogenated? Name the catalyst used.
(c) What is the advantage of detergents over soaps for washing clothes? Also, state one disadvantage.

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. When water is added gradually to a white solid X, a hissing sound is heard and a lot of heat is produced forming a product Y. A suspension of Y in water is applied to the walls of a house during white washing. A clear solution of Y is also used for testing carbon dioxide gas in the laboratory.
(a) What could be solid X? Write its chemical formula.
(b) What could be product Y? Write its chemical formula.
(c) What is the common name of the solution of Y which is used for testing carbon dioxide gas?
(d) Write chemical equation of the reaction which takes place on adding water to slid X.
(e) Which characteristic of chemical reactions is illustrated by this example?

Q. State what happens when a concenarrated solution of sodium chloride is electrolysed? Name the process and justify it.

Write the equation of the reaction involved.

Write the names of the products obtained. Mention one use of each product.

Join BYJU'S Learning Program