Question

A solution of a substance “X” is used for white washing. Name the substance “X” and write its formula.

Answer 1

In this question we have to find the value of the substance X and also to write the formula of the X. Whitewash is to paint over with a lime water mixture so as to brighten up a wall. It will wash off over time if exposed to rain. This is “authentic white wash” and is not paint and is not permanent.

Complete step-by-step answer: The chemical substance X is used for white washing is Calcium Oxide, also known as Quicklime or burnt lime or lime Quicklime is a white caustic alkaline substance consisting of calcium oxide, which is obtained by heating limestone and which combines with water with the production of much heat; lime.The chemical formula of calcium oxide is CaO.
Applications of Cao:$\left( a \right)$Lime is used as a reagent in Laboratories for dehydration , precipitation reactions, etc.
$\left( b \right)$It forms slaked lime or calcium hydroxide when the quicklime reacts with water
$Ca{O_{(s)}}\,\, + \,{H_2}{O_{(l)}}\, \to \,Ca{(OH)_{2\,(aq)}}$
$\left( c \right)$It finds its application in the manufacturing of cement, paper, and high-grade steel.
Disadvantages:$\left( a \right)$Can be only used by skilled laborers.
$\left( b \right)$Is easy to understand and the employees can learn quickly.

Note: CaO is highly beneficial to the users who use the software platforms. It is the cheapest alkali available which is an important ingredient in the manufacturing of caustic soda. It is also used for medicinal purposes.