Question

What is the significance of a formula? Give an illustrate

Answer 1

It is very important to know the actual representation of anything. In chemistry the actual representation is given by the chemical formula. Instead of remembering long names we can use the formulas to represent them like the table salt has scientific name sodium chloride, a big name in formula representation it is $NaCl$ .

Complete answer:
The chemical nature is very important for the study and developing a particular product from one thing. Like why do we need water? In simple formula representation, water is ${H_2}O$ which via formula we can see that water provides oxygen to the living system. Similarly table salt is required in the body for the sodium potassium pump to take place. Table salt is $NaCl$ thus, via formula we can say that table salt is required for the pump in the living body named sodium potassium pump.
Chemical formula also helps us in getting the acidic or the basic nature of the complex. Like hydrochloric acid is acid but why? We see the formula which is $HCl$ , then via formula we get the idea that it can donate the hydrogen, and it is the property of acids to give hydrogen in solution.

Note:
Chemical formulas are very important for the study and knowledge of anything. With the formula we can predict the use as well as the products we get if we consume them. Like when we consume glucose, we get energy and buy products. It is very difficult to know the by-products without the formula. In the case of glucose water and carbon dioxide are released.