A solution of a substance 'X' is used for white washing (1) name the s...
Name and Formula of Substance 'X'
The substance 'X' used for white washing is Calcium Oxide (CaO).
Formula: CaO
Reaction of Calcium Oxide with Water
When Calcium Oxide is mixed with water, it undergoes a chemical reaction to form Calcium Hydroxide (Ca(OH)2).
The reaction is as follows:
CaO + H2O → Ca(OH)2
The reaction is exothermic, releasing a large amount of heat energy. Calcium Hydroxide is a white, alkaline powder that is commonly known as slaked lime. It is used in various applications, including water treatment, construction, and agriculture.
In the above reaction, Calcium Oxide reacts with water to form Calcium Hydroxide by releasing hydroxide ions (OH-) from the water molecule. The Calcium Oxide also goes through a process called hydration, where it absorbs water molecules to form Calcium Hydroxide.
The resulting Calcium Hydroxide solution is used for white washing walls and ceilings. It is mixed with water to form a thick paste, which is then applied to the surface using a brush. As the solution dries, it reacts with carbon dioxide in the air to form Calcium Carbonate, which gives the surface a white, matte finish.
Overall, the reaction of Calcium Oxide with water is an important chemical process that has various practical applications.