Question

Why do the walls appear shiny after two days of white washing? Give the reaction involved in the above case?

Answer 1

Explanation:

The solution used for white washing of the wall is quick lime(CaO).And when this quick lime is mixed with water it gets converted into slaked lime [Ca(OH)2]

and on exposure to the air it finally gets converted into Calcium carbonate[CaCO3] due to which walls shine...

1.CaO + H2O -----> Ca(OH)2

2.Ca(OH)2 + CO2 -----> CaCO3

Answer 2

Bro

The walls are painted with Cao(Calcium Oxide or Quick lime)+H2O gives Ca(OH)2(Calcium Hydroxide or Slaked Lime).

This Ca(OH)2 mixes with

atmospheric Co2 to give CaCo3(Calcium Carbonate) and H2O.

This CaCo3 gives a shiny layer.

HOPE THAT'S ENOUGH : )