Question

What are the essential of a chemical equation ???

Answer 1

Hey mete HERE'S YOUR ANSWER


A chemical equation must fulfil the following equations-

1. It must be consistent with the experimental facts, i.e. a chemical equation must represent a true chemical change. If a chemical reaction is not possible between certain substances it cannot be represented by a chemical equation.

2. It should be balanced i.e. the total number of atoms on both sides of the equation must be equal.

3. It should be molecular i.e. the elementary gases like hydrogen, oxygen, nitrogen etc must be represented in molecular form as H2, O2, N2 etc.

Information conveyed by a chemical equation

A chemical equation conveys both qualitative and quantitative informations. Qualitatively, a chemical equation tells the names of the various reactants and the products.

Quantitatively- a chemical equation represents:
1. The relative number of reactant and product species taking part in the reaction.

2. The relative number of moles of the reactants and products.

3. The relative masses of the reactants and products.

4. The relative volumes of gaseous reactants and products.

HOPE IT HELPS

Answer 2

Hey dear !!!!

So here's your answer :-

Essentials of a chemical equation are :-

(1) It must represent a true chemical changes.

(2) All the reactants and the products of the chemical reaction must be in the form of their respective chemical formulae / symbols.

(3) The total number of atoms of all the elements must be same in both sides.

(4)It must be molecular.

For example :-
The following chemical equation

Pr + 4HCl ----->< PtCl4 + 2H2.

appears to be balanced equation algebraically, but it does not represent a true chemical reaction and hence is not a chemical reaction and is not a chemical equation since platinum does not react with hydrochloric acid to produce hydrogen.

On the other hand, decomposition of potassium chlorate represented below :-

KClO3 ----> KCl + 3[O]


represents a true chemical change and balanced too,
yet oxygen is not shown in its molecular form, hence it is not a balanced chemical equation.


Hope this helps you dear ✌✌✌✌