Question

A chemical compound ‘X’ used in soda acid fire extinguishers and also an ingredient in antacids.
A.Identify ‘X’ and give its chemical formula.
B.Write a chemical equation for its preparation starting from sodium chloride.
C.What happens when this compound is heated strongly?

Answer 1

Hint: The compound is a basic compound which is commonly found in households by the name of baking soda.

Complete step by step answer:
Sodium bicarbonate is a chemical compound that is used in both fire extinguishers and antacids. Sodium bicarbonate, commonly known as baking soda, is a chemical compound with the formula . It is a salt made of a sodium cation and a bicarbonate anion. Sodium bicarbonate is a white crystalline solid, but often appears as a fine powder.
In order to make sodium bicarbonate from sodium chloride, we need to use water, carbon dioxide and ammonia.
The complete step by step reaction is as follows:$ \Rightarrow NaCl + C{O_2} + N{H_3} + {H_2}O \to NaHC{O_3} + N{H_4}Cl\;\left( l \right)$
This reaction happens as a side reaction during the Solvay reaction. The sodium bicarbonate produced in this process is of low purity.
When heated strongly sodium bicarbonate produces carbon dioxide. This is the property that is employed in fire extinguishers, baking and antacids. Production of carbon dioxide is essential to cut – off fire. So, sodium carbonate is a very important component of fire extinguishers. In the process of baking, production of carbon dioxide aids in rising of the dough, thus producing a soft and fluffy bread.
The process of release of carbon dioxide occurs at a temperature above 80 °C (180 °F). The reaction is –
\[ \Rightarrow 2NaHC{O_3} \to N{a_2}C{O_3} + {H_2}O + C{O_2}\]

Note:
-Sodium bicarbonate finds many uses in various industries, for example, the baking industry, as a fungicidal and pest control agent, etc.
-Sodium bicarbonate is used in the process of removing paint and corrosion called soda – blasting.