Question

State the advantage of writing a chemical equation using formula and symbols.

Answer 1

Hint: Chemical equations are symbolic representation of chemical reactions in which the reactants and the products are expressed in terms of their respective chemical formulae. Further, symbols are also used to represent factors such as the direction of the reaction, physical states etc.

Completes step by step answer:
Chemical reactions can be represented with the help of chemical equations. The reacting entities are written on the left-hand side whereas the products that are formed are written on the right-hand side of the chemical equation. An example is as shown:
 $2{H_2} + {O_2} \to 2{H_2}O$
Further, it can be also observed that there are coefficients assigned to each of the symbols of the corresponding reactants and products. Now, these symbols and formulas have various advantages in a chemical equation. Some of the advantages are listed below:
Qualitative – It helps in knowing the reactants and the product
Quantitative-Helps in knowing the relation between the quantities of reactants consumed and products formed.
The representation of the chemical reaction becomes easy. It saves time and space in writing.
In order to prepare a definite amount of the product, the amount of the reactant to be used can be calculated accurately

Note:
The symbols used to denote the physical states of the reacting entities include (s) for solid, (l) for liquid, (g) for gas and (aq) for the aqueous solution. Further, the chemical equations in which electrolytes are represented in the form of dissociated ions are commonly referred to as ionic equations. They are often used to represent the displacement reactions that take place in the aqueous mediums.